I think I would prefer a Mech Warrior type game since the game design already exist on paper such as Armor, Engine, Weapons, and Heat Sinks.

But the problem there is balance. Who would roll 5 Bumble Bees if you can roll 5 Optimus Primess for pure pwnage?

Same with a Mech Warrior type game. Would one roll 5x Locust when they can control 5 Omni Mechs?