If there is no AI/automatic setting for RTS stuff, then I'd try co-op multiplayer. However, I don't know anyone who plays RTS games, so would be reliant on online matchmaking.
I'd probably be better off with a single player difficulty level a notch below easy, though, rather than a co-op option. The few RTS games I've tried didn't go well (in a few games of L.E.D. Wars I don't think I lasted more than a couple minutes). On the other hand, if there is a game that can get me interested in mastering the RTS mechanic, it would be Dragon Commander (ie not being a fan of straight action RPGs, I would have given I of the Dragon a pass if not for being able to play as a dragon).
In general I'm not big on multiplayer games, so you may want to weight my opinions accordingly. The last game I played co-op with was Diablo 2, with my brother. Eventually our schedules got a little out of sync, and he kept playing with the same character when I couldn't play, so I fell behind enough that I quit, after a half-heated attempt to catch up (single player was boring).
