>>718970909 (OP)
The graphics are absurdly dated. Virtually no battle animations, still four-dudes-in-a-line simulator despite being a late PS3/PS4 title. Look at FF13 as a good example; despite coming out a decade earlier, it has everyone running around the enemy during battles to really breathe life into it (and FF13 was a BAD game!). P5 couldn't bother to give anyone anything other than an idle animation, and even the big attacks are cut-away 2D pre-rendered cutscenes that end on a still image. The only graphics people rave about is the UI, but it's ultimately just jpgs sliding around on a screen and not actually substantive - the actual menus themselves don't do anything special.
Game is advertised as being about stealth but the stealth mechanic is a joke. You press X to turn invisible, with enemies looking directly at you but not detecting you simply because you're up against a wall. It could be removed from the game entirely and no one would notice. It's also outright discouraged because missing out in fights in a JRPG = fewer rewards, the devs did not think it through.
Entire battle mechanics like the firearms are completely useless to the point where I'm not sure why it was even included. Royal addresses this a little but it's still a complete waste to fire your gun.
Music is all-around good but no one mentions the stinker tracks. Despite Mementos being the game's biggest and longest dungeon by far, and despite you constantly visiting it throughout the entirety of the 100-hour game, it has exactly one music track which is a repetitive ten-second loop.
The game offers multiple "bad end" routes but they all boil down to being a paragraph of dialogue and a jpg. Actual SMT games usually have multiple fleshed out routes with unique content. Why couldn't you join Maruki and fight against Akechi leading the phantom thieves trying to stop you? Why couldn't you join Yaldabaoth and see what being his agent is like, instead of the game just saying that's what you do?