This is an initial review and I will probably come back and modify it.
It is fun. Is it $75 fun? I would say no. I wish I had paid maybe $40 for it.
The actual gameplay, while fun, is nothing new. We've been playing this same game for years now. In all fairness, there isn't much one can do to innovate in the hack-and-slash format.
Why does it make you wait so long to get a mount? Seems odd.
The gameplay loop is already starting to grow stale and I'm not even done with the story. The dungeons have gotten repetitive and some of them feel like they were almost copy-pasted. I know a few people who finished the story and were so bored with the gameplay by that point they quit because the story was the only thing keeping them engaged.
The graphics also have not really impressed me much, the cinematic scenes excluded (those are the usual Blizzard awesome). My wife saw my screen and thought I was playing Path of Exile and I haven't been able to get that out of my head. It looks basically the same.
The story is good. I am quite enjoying it. The voice acting is so great. It is way better than D3 in this regard. I haven't completed the story yet, so no spoilers please.
They did not learn from the beta and Druids need a heavy early-game overhaul. Yes, they are effective later, but they have to go through hell (pun intended) to get there. Bosses that took me 5 minutes on my Druid took me like 10 seconds on my Rogue. They also force Druids to hike to the other side of the freaking map and beat a bloody stronghold to get their class specialization, whereas with the Rogue it was a short questline in the first area and I had it. Druids need a major early-game buff and a class quest that is far more accessible.
I don't like how the Paragon system is presented after 50. You get an XP bar and every 25% you get another point. I would prefer the D3 method of presenting it: an XP bar that fills all the way for each point. Yes, nothing would functionally change, but it would feel better to be seeing that XP bar move rather than the microscopic increases it gets now. It makes me feel like I'm wasting my time as it is right now.
The legendaries have been a lot of fun to find. The buffs they provide really do encourage you to shake things up with your spec.
I love how easy it is to respec. If you sell your gear, the respec cost quickly becomes irrelevant. That being said, I honestly don't understand the purpose in the gold cost for it.
We'll see what the endgame ends up looking like.
Update:
The post-story stuff is fun until you hit a wall. Leveling slows down to a bloody crawl. At first, you are getting new and cool gear and it is fun, but then that just suddenly stops. All the stuff dropping becomes worthless. You get uniques, but the affixes on them are pointless. You can do nightmare dungeons, but don't expect anything even decent to drop.
I did the dungeon to unlock World Tier 4. Glass Cannon doesn't even begin to describe what I am there. I can kill things fast but even a slight breeze kills me.
Honestly, thinking of uninstalling until some big changes are made. The post-story is just simply bleh right now.

This was one of my favorite games growing up. Super fun.

This is a really fun Mario game. Still holds up today. It also introduced Wario!

A very odd Mario game but a fun one, nonetheless. I had a lot of fun with this on the Game Boy as a kid. Still holds up now.

One of the best Metroidvanias out there. This game is a blast.
The randomizer for it is pretty good, too.

I mean, more Zelda? Yes, please!
I wasn't the biggest fan of this. I enjoyed that it was different, but it just seemed like all it added in a lot of cases was more tedium. It just took longer and that's basically it.

One of the hardest games I've played and it definitely did feel cheap in some areas rather than skill-based, but I had fun with it. The final boss was surprisingly easy.

I was very pleasantly blown away by this game. It is fun. The combat system is amazing, although by the second planet it has started to grow a bit stale. It just hasn't really changed much since the start of the game, but it is good so I guess that's fine. I'd rather this than all the mindless hack-and-slash RPGs are doing now.

A fun Soulslike from the Souls people. Takes a much more offensive approach than Dark Souls. Definitely give it a try if you like Souls games.
My only complaint is the optional dungeons got super repetitive and the boss at the end of them was stupid easy.

This review contains spoilers

This is a fantastic game and will go down as a legend. As someone who thought BotW was at best a mediocre experience, I LOVED TotK. It improves upon the many faults of BotW in great ways.

Spoiler warning ahead, obviously. Probably shouldn't be looking at reviews if you are worried about spoilers, anyways.

PROS:
1. The story is great, if a bit predictable.
2. The new exploration mechanics are awesome.
3. The dungeons feel a LOT more meatier than their blink-and-you-miss-it counterparts in BotW.
4. The world isn't even close to as empty as it was in BotW.
5. Fusion helps counter the awfulness of the durability mechanic. Bit disappointed that it was even still there at all as it was by far the worst part of BotW, but at least in TotK you can do something to help make your stuff last longer.
6. The 3 layers of the world are fun to explore and go between and the new mechanics help you do that in great ways.
7. The boss fights are a blast, with the only exception being the Water boss. That one was just simply annoying.

CONS:
1. The ending felt a bit too...easy? They build up Draconification as being permanent so much and make the reveal of Zelda doing that so sad, but then some energy shoots out of Link's hand at the end and suddenly it isn't permanent anymore? When I found Mineru, I expected her to have found a way to undo it and she was going to work with Link on it, but no, she just wanted revenge. I dunno. I was pretty disappointed, honestly.
2. Similar point to the above, but there was a ton of talk about the dragons being immortal until Link fights one and suddenly there are big obvious weak points that allows him to kill one? It felt too easy.
3. Being able to build monstrosities is fun, yes, but why make them disappear on reloads? Keep the last one made. It is super sad to see your vehicle you just put all that work into (or spent all that zonaite on) poof into thin air because you walked into a shrine. Feels like a pointless thing to do.
4. The planes disappearing after a tiny bit of use sucks. It defeats the purpose of them.
5. Stamina. The game could have benefited from a more lax stamina wheel. The amount you get to start with is pathetic. I honestly put all my points into increasing that way before I increased my health because it went down so bloody fast.
6. Seriously, why does everything have to hit so damn hard? I liked it at first, but it quickly got old. Also, it made absolutely no sense whatsoever that a silver Bokoblin hit Link way harder than the bloody Demon King himself.
7. Similar to 5, I guess, but I thought the charge you get to start with to power your creations was pretty pathetic. I don't see the harm in giving players a bigger pool to start with.
8. The way the story was told. I wish you were guaranteed to see the flashbacks in chronological order. I found the one where Ganondorf kills Sonia as one of my first ones and it spoiled almost all the memories I found after that.

A great fangame. It must have taken an incredibly massive amount of work to make this, which is why I feel bad giving it a low score.
There is a certain point in the game where the dev obviously got burnt out. I don't blame them, at all, but you can really tell.
I could never have made anything close to this, so major kudos there.

A pretty fun fanmade Metroid game. Bit short, but still a blast.

The controls take some getting used to, honestly, but once you get the hang of them this game is one of the best made. Crazy fun game.
There are a few randomizers for this too, which are a blast.

The latest DKC to come out.
Why has it been 9 years since the last DKC, Nintendo?!
This game is pretty fun, moreso than DKCR, imo. I still think DKC2 is the best of the franchise, but this one is pretty close.
The vehicle levels sucked.

A pretty fun game and a nice return for the DKC series. I wouldn't say it is the best one, but it is still fun. 2 still holds the title of best.
I hated that the other characters were just powerups.
I also hated the vehicle levels.