In an RTS where you have individual units, I prefer to micro them. Its not even so much as not trusting the AI to do it for me, but the fact that I like having control and making good formations.
However, I have been thinking about a game where you play as the king or general of a nation. You do not have direct control over any units, but rather you assign officers to control each of the various armies and send them around the strategic map. You give them orders and you have to rely on scouting information to get back to you.
It would be a really slow RTS, so slow that it feels like a TBS. You will issue orders but it will take several minutes for them to execute. I decided it would be cool if all the battles took place on the strategic map, but you can zoom into any battle and see all the little guys fighting as if it were a tactical battle.
So it would be a game thats more focused on scouting, economy, logistics, and positioning you units. You would have to decide where to put your best officers, since their AI would be much better than that of weaker officers for directing your units in battle. If an officer gets taken out, then all the remaining troops have their AI weakened to compensate.
I think this kind of war simulation game would be very interesting, though it is dramatically differen't from most of the stuff we have seen so far. Yes, it would probably require much better AI than we have today to make it interesting to watch the battles, but since its always AI vs AI its not a huge balance issue.
If you look at gratuitous space battles, I don't enjoy watching the battles unfold because they AI is stupid and you don't have enough controls. I guess a customization system where you could give your officers some detailed orders on how to proceed in various battle conditions might help out, it might also over-complicate the system.
The bottom line is I think the game needs to be designed from the ground up with autonomous units in mind and you can't really tack it on to assist people who don't like to micro.