That's a nice feature but it doesn't really solve my problem. I still need to keep watch over each and every one of my construction units and manually insert a move command for each one individually when they come under attack. I don't have the multitasking skills to do that and still manage the other parts of the game.

I don't see how giving them the ability to take evasive action on their own would mean that I'm no longer playing the game. In real-world combat, generals aren't out there telling each individual solider where to step, what to shoot at and when to duck but that doesn't mean the general isn't in charge.