He said it in his first post, anyways.
" Play MechCommander"
Better, yet, play MechWarrior, so mech custimazation is better and more detailed.
Actualy, I thought of a similar idea once.
You choose your Mech', from the choices of Tank, Dragoon, and Goliath, and different ones have diff HP's and Weapon Slots.
Dragoon: Large, 10 Weapon Slots, heavy Armor, Medium HP
Tank: Small, 4 Weapon Slots, low Armor, Low HP
Goliath: Medium, 6 Weapon Slots, Medium Armor, High HP
How the weapons work is, basicaly, you have a Bunker following you, and depending on what weapons you choose, some air units.
But now that I know about stackable units, it would be a lot better.
And it'd be kinda realistic, because the Bunker would get in your way sometimes, emulating the fact that you're covered in lots of weird heavy weapon

s.