1. there are currently no new evolution items, consult the readme for a list of all altered evolution methods
2. yes, when it town and it's in your party, check the Pokemon in the menu (not Chimecho Assembly!) and there should be an option to rename it
3. that...definitely shouldn't be happening. I'm checking the data on Servine and Serperior and I see no reason she shouldn't be able to evolve? o.o