The problem isn’t the aesthetics. The film looked mostly fine, albeit a bit fake at times. Mostly though the problem is that there is no story.
Maybe not everyone, but some people will look back one day and wonder WTF they were thinking to like a movie with Captain Phasma lowering the shields, Gollum-Snoke, CGI rathars (or whatever they were called) dragging one of the main characters through the ship at 200 mph until someone cuts off its tentacles with a door that somehow leaves the other character completely unhurt, a sith-apprentice who one second is stopping blaster bolts in mid-air and flinging people violently into trees, then 5 seconds later is getting injured by random stormtroopers, the millenium falcon jumping into hyperspace while it’s still in a hangar bay, and on and on.
Sure the film was kind of fun but in a really dumb way. It’s better than the prequels, but we know that’s not saying much. When the hype dies down, people will see this film for what it is.
Edit:
After the OT, I just hold this franchise up to a higher standard.