I actually had this exact same thought yesterday when we were having trouble getting a pre-made to push with our assaults. Namely, it gets hard to find certain players by name using the overlay and all 12 players on your team are still alive.
All that blue in your face gets nauseating really quick. Too much blue... we need more colours and the ability to assign them for the team arbitrarily. You could then identify a player's role by their colour.
EDIT: How about more and differently sized shapes, too? Like a slightly more elaborate taco to identify the 'mechs that people should rally behind for pushes (Timberwolves, Dire Wolves, Banshees, etc.).
Edited by Hornsby, 03 December 2014 - 12:58 AM.