Wisp, Blanca, acorn festival, signs for villager houses, having a flag by your house... And the upper and lower part of your town, and being able to place coconut trees on the lower part.. Oh and also the look of the carnations, they were so cute and fluffy in LGTTC! Now they're very rose-like and like love flowers... :/ I also liked the community of previous games better, now a lot of people are perfectionists and organize literally everything, instead of just playing and enjoying the game. I also liked the idea of the city better, and the layout. It was lovely that Phineas was the balloon and pinwheel man as well, I much prefer that over his current job.
Bon Bonne mentioned the shopping card, wasn't that a sort of bank card you could use to buy from your savings? I totally forgot that was a thing, but it was a pretty nice thing indeed!
Acorn festival! I forgot about that.