Do you play SP?

[llamabeast]

MP is unplayable due to that I should spent too many time for micromanagement to be able to fight good at late game

I think lots of people (especially those with little time or limited tolerance for micromanagement, among which I count myself) have concluded that the game works best with smallish maps and smallish numbers of players. Sombre reckons the game shouldn't be played with more than 8, and 6 is ideal. I wouldn't go quite that far - but if you have found MP too much, I would definitely recommend a 4 or 6-player game. They're a lot of fun and not a lot of work.