How bout a leader class DOTM Megatron and he comes with a shotgun that turns into Igor. Or you could just rip the head off one of your Long Hauls.
This. I don't know why exactly Igor was in DOTM to begin with, and since he served no real purpose, I don't really want to see him appear in the movies again.
EYE-gor should totally get a spin-off movie. Or maybe even copy-paste Eyegor to Prime, let him get a segment ala Tales of Ba Sing Se to himself. Damn his eyes!