Saw a post on reddit about how there should be a third travelling merchant like CJ/Flick who is an old dog professor who'll buy your fossils. You could also give him a full fossil set and he could make you a mini fossil model.
It occurred to me the other day that I wish there were more ways to interact with the villagers. Alli and Ike were singing in the plaza and I couldn’t even join in Haha
-Villagers will use gifted wallpaper or flooring in their house(!!!)
-Items and plants (but maybe not buildings) able to be placed on the highest cliff level
-Customizable Resident Services exterior
-More "large" items, (maybe as NM items?) especially some that I miss from NL, like the bus stop and trellis!