Here would be a few changes that I would make:
1. A freedom of choice for selecting factions for campaigns rather than playing through all the houses as a Mercenary Commander (but there should be an optional choice for a Merc campaign)
2. Make capturing bases easier instead of capturing parts of it.
3. A better customization for mechs with logos, paintable schemes and visual mech representations in mechlabs.
4. Better mech animations like, humanoid mechs walking with their arms down instead of always holding them up.
5.Better Graphics and Models, Mechcommander's graphics was pretty good and it looked realistic for game made in the 90's. For Mechcommander 2 the models looked blocky and textures did look a bit strange.
6. Well known actors
But if you have your own suggestions that you would like to change for a Mechcommander 3, post it here.
Edited by Will9761, 23 July 2014 - 07:38 PM.