You'll forgive me if someone has asked this before, but after seeing the E3 2012 footage for ACIII and talking with a friend who's just getting into the series, I started to think about where else Ubisoft could go.
Among other possibilities (feudal Japan, seventeenth-century France, etc...) I think I'd most like to see ancient Greece. I'm thinking Athens and Sparta, and the Persian Wars; centres of learning and virtue against a hegemonic empire, and all that nonsense. I feel like the Assassins v. Templar conflict could fit into that framework rather nicely.
But that's just me. What say you?