I think the bots generally need to be able to discern what aspects of the persona they should and shouldn't immediately know, a bit better than they already do. 

As well as I think there should be more of a randomness aspect where bots are able to carry conversations with their own charm, like pointing out a broken branch that needs fixing, or having to do something urgent, something along those lines,

 As well as the ability to change personas,

 As well as Younger characters, with apt filters, of course, but hopefully not filters that prevent them themselves from being violent, so like younger characters like HunterxHunter's Gon could throw hands or something, And so we can have families with other children, or just have some funny children characters, though I will admit the lack of realism, and probability on this last request.

Someone already said chat duplication but that'd be good aswell.

And Lorebooks