micromanagement is just as much a part of a strategy game as the other components you listed up. COH1 was already extremely low on micromanagement. Reducing it even more will leave almost no room anymore to distinguish between good and great players.
This. If you don't like micro management, remember this is a RTS: REAL TIME strategy. If you want slow paced; you should invest more time in games like Chess, Total War games, and Civ5.
Not really. If the game is too easy and the skill ceiling is low, you'd get a lot of "top" players, but the games would be decided by luck or stupid mistakes. Imagine tic-tac-toe tournament.
Men of War has a clunky interface, and it takes a while just to learn how to preform simple tasks (re supplying your troops, repairing stuff, making defenses, mastering direct control, etc) then you still have to learn the tactics of the game, which are much more complex than those in CoH.
SC2 is a really easy game to understand. You make workers, build structures, build units, expand, and attack. All with just simple hotkey memorization and a little bit of clicking. Does this mean SC2 has a low skill ceiling? Hell no.