I happen to dislike a number of features in V4, V4.5 and V5.
If there was a tama with V1 games, V2 games, all the V1 V2 and V3 characters, shop, shop codes, a CHANCE of family, wifi, the RETURN OF TOUCHSCREENS, and a sort of city inside your tama where you could move around. Maybe that would be where the store was, with like three different ones (Food Store, Item Store, Code Store).
That's what I'd find the perfect tama.
Also a way to lean towards characters along with care (that ISN'T skill points or bondage) would be nice as well.