These games are generally in development for several years and in Unity's case 4 years. Ubisoft has a ton of developers all over the world working on these titles, the credits for each AC game take forever to get through. I think the setting for the next game is great, hopefully it'll be more polished when it releases than Unity was, then again it's not a first year new gen title the way Unity is either so that should help with the development process. I hope they learn they don't need thousands of NPC's on screen at once, honestly they could have easily cut 1/3 of the NPC's out of Unity and it wouldn't have had any negative impact at all.