In general, I think the forced perspective needs to be fixed. Items, people, weeds, etc. get lost very easily behind buildings and trees.
The game also needs to figure out how to fix the lag- maybe putting more on the client side and syncing less frequently?
Stats on who has visited/gifted would be an amazing feature.
More items per page when viewing gifts, inventory, etc. Maybe a view that is just a list of names, instead of loading the images? This would make these screens a lot easier to navigate.