The Hidden Blade Assassin's Creed in Depth

Before I lay out how multiplayer should work, let me make something clear. The last time I made this topic on AC-Maps it got besieged by posts saying why it wouldn't work. I only want multiplayer ideas please.

Anyway there's been some speculation over whether or not AC3 will have multiplayer. Ubi has said it's a possibility, but it would take some work. This topic is mainly for multiplayer brainstorming, but I already have a lot of ideas, as well as a system for how multiplayer would work.

The two "c's" of multiplayer work like this:

Combat (self-explanitory)