i really have no idea about the games before NH, but i've seen so many people talk about a coffee shop of sorts, and some other things, that i would just die to have in NH. i'm obsessed with coffee, so my little island rep gettting to run around with a coffee in her hands would be the best thing to ever happen to me in this game yeah i know, it doesn't take much to make me happeh. i would love to be able to have food items, too; maybe to cook? i don't know, bit of a stretch probably, and starting to cross over a line to start melding AC with other games like stardew valley, etc., but i would really love a feature like that.
how amazing would it be to cook shari something and give it to her? then she can stop trying to use me as a recipe tester.
on a side note, things like furniture sets and new dialogue or interactions with your villagers would be amazing as well. the ability to hang things on cliff walls would also be amazing, but i highly doubt that will ever become a thing.
was it ever possible for villagers to come call upon you for something, the way we go to their house? i think i've seen something about that in later games - a feature that let Lobo come say hi when i'm bootin' around my house would be amazing.