Quote Originally Posted by Sinnertwin View Post
Renaming him Skyfire and modifying his appearance in the cartoon was Hasbro's way of getting a big transforming white jet with red thrusters promoted to the masses without the legal hassles.
That's never been confirmed. It's not really known why Sunbow decided to call Jetfire "Skyfire" in the G1 cartoon. Changing the character design alone was enough to evade legal issues with Harmony Gold -- they don't own the rights to the Jetfire name, only to the VF-1S Valkyrie design.
re: "Why Skyfire?"

Quote Originally Posted by DELTAprime View Post
I've never heard of these guys before. I wonder why they never sued Hasbro over Classics Jetfire. Seems to me like if they have a problem with a GI Joe toy with a back pack in it they should have had a problem with Classics Jetfire also.
Because Classics Jetfire is not a Valkyrie VF-1S. HasTak very carefully (and cleverly) designed it as an hybrid between a VF-1S and the G1 cartoon/comic design of Jetfire/Skyfire. It bears a vague resemblance to those designs, but doesn't actually look like either one.

Quote Originally Posted by Magnus View Post
From a legal/intellectual property point of view, what's stopping Hasbro/TakaraTomy from making a new version of Skyfire? That design was created specifically to avoid resemblance to the Valkyrie.
I believe that was Jetfire_in_the_sky's point. Masterpiece is all about engineering G1 Transformers to look more like the cartoon, so an MP Skyfire (Jetfire was only ever called "Skyfire" in Japan) would definitely be based on the cartoon model, and not at all about emulating the toy.