Okay, here is a stab at one of my favorite designs, and (truthfully) the one that got me into this mess to start with.
Note that it doesn't have ablative armor (per Jav's outline above); I kept the armor low because I didn't want to munch out too much, but I might add in an UpArmored variant, just to sate my own requirements for a kickass wheeled medium tank.
I did add in a PDS; insurgents love their GM/Ls, y'know. Catroux to follow...
Here it is:
Smaller, and with less bells and whistles.