So, I got a Decepticharge

in a "for parts lot" on ebay.
I was planning on doing some extensive rebuilds on the jumstarters, but I have a couple projects planned first that are a little less complicated (since I'm kind of new to mods)
universe battlechargers (which I should have done both from bumblebee or wheeljack, but instead I'm using red alert and ko deep cover)
and something with this beaten up Decepticharge. His spoiler, antenae, engine and side mirrors are missing and his paint job was messed up. So, I stripped off the "decals" and I was planning on repainting him, at least where his car parts show, and doing some kind of scratch-build to cover-up the missing parts and build up his neck a little. It is such a thin peg and looks weak. I was thinking of doing the built out pieces as some kind of vehicle mounted guns
Now' here's where I could use a little advice. what color should I paint him and who should he be? Is there and obvious character that he could become? Or should I keep as Decepticharge and just say its his ultra-battle mode... or energon Decepticharge... or Shattered Glass Decepticharge?
...thoughts?

Advice?