AC2 had this and I liked it. Going back to that game it felt a little bit like that part needed more fleshing out but that could be more modern experiences talking.
We need to be abke to snd people on contracts, call in apprentices to help and customise a base.
2 had the uncles villa and town to be improved. Quite basic but a lot of fun and welcome addition.
Brotherhood had the contracts and crew to help out.
Cant remember what Revelations brought, besides the hook.