Along with the main objectives on a map they should add 3 control points. Each team starts out with one, and there is one neutral one. The first team to take and hold all three becomes the new "owner" of that map, and they will defend it in the next meta-game cycle.
+1... sure it might not work out as well as it sounds, but i'd be curious to see how it could be implemented.
basically though, this is just like CoD Domination.... as far as i'm aware this also happens to be the most popular objective mode in BlOps right now.