When you hear the building under attack warning, I think you (as a commander) should see that building marked on the map. If you have like 4 barracks, it's pretty difficult to think which one of them is under attack, if there's battle in all fronts...
Natural selection defaults the space key to jump to the last "warning" message. I would prefer a Blip or blinking red on the map etc.
Would be very useful. Also it would be good if there was a "requesting attention" command for infantry, if they want a ref, and a box will pop up (like NS) which commanders can click on to jump to their location.
What about a specific voice command, which you could use near resource nodes? It would mark you on the map too.