The evidence of systems like Relic RTSes (Company of Heroes, Dawn of War, etc) indicates that even when you make the system easier to use, micro skills just shift to something else. In DoW2, for example, the skills that in SC2 make controlling a bunch of marines and macroing even possible make for sophisticated flanks and clever lures that are IMHO far more interesting to watch. Very sophisticated grenade play, specialized suppression mechanics, and doing five different things at the same time with your units is actually expected at high levels of play, whereas I can count the number of times I've seen a major flanking maneuver in SC2 on the fingers of both hands.