Wouldn't that be incredibly hard, considering that the players perspective is disconnected from the units?
I observe my base and order a group of units to go to some place on the minimap. I see them moving along on their way, and decide to scroll to them. Only to realize that they already arrived and got massacred by the enemy. I go back to my base only to realize that it was destroyed ages ago (in its frame of reference) and I'm dead. Game over. Thanks for playing SR Red Alert.
I observe my base and order a group of units to go to some place on the minimap. I see them moving along on their way, and decide to scroll to them. Only to realize that they already arrived and got massacred by the enemy. I go back to my base only to realize that it was destroyed ages ago (in its frame of reference) and I'm dead. Game over. Thanks for playing SR Red Alert.