Didn't do too much to the figure (painted rims, "engine", insignias, and chest belts), just thought it needed to be less bland to be in my collection.
This was actually one of my first official transformers toy. I think I also have the Mcdonalds Armada Starscream and Megatron lying somewhere too.
It certainly improves the look of the toy! I got these when they originally came out, too, with the same thoughts - I just never made it with them like you did here The Prime really isn't too bad of a little toy, either. Nice work here!