Megatron or Megatron is a MUST buy for me!
I can imagine a cartoon accurate toy with all that G1 goodness in my mind...

Speaking of Megs, I wouldn't be too bugged if they gave his legs (and gun handle) a more cartoon-like look, as in quite flat and dark grey coloured, as shown below:

Megatron Gun Mode by Bidoofdude, on Flickr


Megatron Robot Mode by Bidoofdude, on Flickr

I think this would solve some of the issues surrounding him and his ownership and would allow for a cartoon-like look.

Though, no idea how to fix the chicken legs.