I haven't played much yet but at least for now, I can say it's pretty much the same game as before. The 'II' in the title means almost nothing because this feels more like a new edition than a sequel. The old characters look pretty much the same. There are a few great new tracks in the soundtrack, but most are reused from previous games, with at most a new 30-second solo added to them. The new UI looks mostly great, but it's a bit more generic than the old one and i also can't tell much of a change gameplay-wise, but I'm only a casual in this franchise, so take this with a grain of salt.

It's a good game, and I will play it a lot, but it's a super safe move by the devs and what i'm seeing at the moment is way less than i expected a sequel to be. That's normal with niche games like UNIB though, so I'm not really upset. Games like that rarely get a huge sequel that changes everything like some of the big ones such as King of Fighters, Guilty Gear, or Street Fighter do. If the game is at a fair price where you live, I see no reason not to buy it to give it a try. However, in my country, the price is ridiculous for pretty much the same game as before. Might as well buy a more popular fighting game that will have active players for much longer than UNIB and have way more new content. Maybe this release goes well enough that one day they do an actual sequel. Always a possibility; we'll see how it goes with the sales after they fix the online.