My only advice if you make another one is.......
Once I stopped laughing and took another look at the alt mode I came to the conclusion that yeah, I could totally see that. I was thinking that it needed a little something to break up all that red and the only thing that came to mind would be a silver stripe something along the lines of the blue, angled stripe that runs the length of G1 Primes trailer. The blue flames might be a cool tribute to Movie Prime while the bot mode still retains more of a traditional Prime look.
No matter what, this is an awesome looking take on Prime. I never would have thought of doing something like this. Great Job!