I much prefer B for Bombastic. 

I've gone ahead and fixed most of the stuff you requested, adding strength of the missile launchers and their limits, and also added the caliber and ammunition supply of the gatling gun. 

As for the new system, what I meant by being able to take on a Medium, I meant as in, they simply can't just wipe the floor with a heavy when it comes to running around and what not. Instead of watching while a Medium runs circles around your Heavy while laughing, you can now catch up and fuck 'em up. Also, being able to fight in a melee with a Medium.

The craft is indeed a prototype, sorry if I confused it at all.