Overall I'd say that you guys should link factoriers with the pwoer gens. The turrets on teh hil was an innovative idea, although I rpobably would've went for 1 instead of the 2. Then used that as a chokepoint to attract enemy troops then deter him from going there to destroy your meaningless turrets.
Red should've went heavier on the air power and less mech bots. Mechs are best when they are manuevered around all over the game field, not run in a straight line towards turrets. With a few more bombers for red, he would've easily been able to cripple the attack by black.
I think it would also help to do more scouting and build some radars around the map. When red was under attack it would've helped to run from the danger zone a bit earlier when he had some units around to help his commander run away.