Thought I'd put this out there, why on earth has no one got a team together and requested for some modding/map making tools for II/Brotherhood/Revelations I mean think about it, it'd be amazing to be able to add more map to Rome or Constantinople, have added weapons, and, for the serious modders, extra attack animations and/or different playable characters?! The possibilities are quite honestly endless.
Preferably (IMHO) Brotherhood would suit it best, the atmosphere created in that game is fantastic. Plus the wide open spaces in the Roma country side leave plenty of opportunities for added Borgia Towers, small assassination side quests, and other bits of awesome. Even just having some open space outside of one of the city gates to roam around or leaving the door open on the Castello would be amazing.
Don't get me wrong, it'd take quite a big team to do any of this stuff, but once the gate is open I'm sure plenty of Assassin addicts who know a thing or two about modding would be into it.
This is just a little dream of mine that is probably shared by quite a few other Assassin's Creed players/fans.
I know with ACIII on its way people are losing interest in the older ones, and then eventually ACIV, V, VI, so on and so on will overshadow their predecessors. But I will always, always hang out for a moddable Assassin's Creed.