Love it! The only confusing thing for me is the blue cannon -- it starts to look Shattered Glassy. I'd say leave it orange, or purple or black for G1 Megatron.
that looks awesome. the blue cannon works but i'd like to see some of the other suggested colours. i had a concept like this in my head for a while but I was thinking more of Skywarp and Thundercracker regaining control of their cyclonus and scourge bodies, "rebels of unicron" or something I was gonna call them. Awesome idea i would really like to see this in toy form.
oooo, i like that paint scheme quite a bit! The blue does look a bit...odd, but maybe an off-white or pitch black would compliment the scheme overall.
I agree. I think purple could also symbolize that he has control of Unicron's will as Galvatron was predominantly purple. That's just my initial thought. Great work and a great concept! It's certainly interesting "NOBODY summons MEGATRON!"