I would recommend playing the original version(s) before trying this remake. This would be a better remake if it didn't add so much new mid to it, especially with how the new secret Ending E ruins the great final Ending D from the original game. Not to mention the new main quest and boss take up far too much time in the second half and I got nothing out of it personally. More nitpicky and less critical issues I had personally were how almost every new edit of a song from the original game felt like a downgrade, like it was neutered in some fashion. Or how clean and smoothed out almost every texture and model has become to the point where it loses a lot of the grit and grime the original had.
The core game is mostly the same so if you're the kind of person who doesn't care/won't actually play through the other endings you won't notice most of the new changes.

Might be the most overhyped game of all time, the beginning is the best part of the game and it's all downhill after that. Not even the interesting side characters can save you from the boredom that is the middle of this game, and the end doesn't even get any better. Unless you're a young teenager, or if you dislike JRPGs, steer clear of this game.
The most positive aspect of this game is the music and that's nothing special because Shoji Meguro has been behind plenty of great soundtracks in the past, also demon negotiation is actually pretty cool to bring back to Persona since it wasn't present for 3 or 4, however there's weird mistranslations and errors that just make it confusing. It just feels like content creep, the game. Way too much going on with no real focus. Anyone saying the main plot is compelling or engaging is straight up lying because the main characters forget important shit all the time and have to remind the player Oh Yeah That Happened even though you would know if you paid the smallest amount of attention. Not to mention the main motive for each dungeon past the first is just redundant Adults Bad reasoning, which continues all the way until the ending.