I can't figure out why people think tying Firefly into Snake-Eyes's past "ruined" him. I agree that it was unnecessary to make him part ninja, but he was still the same character as evidenced by his speech and actions. And really, except for that goofy scorpion maneuver, how often did you see him do any ninja stuff?

I personally like the fact that the histories of Snake-Eyes, Cobra Commander, the Baroness, Destro, Zartan, Storm Shadow, and Firefly are intertwined. Sure it's a huge coincidence, but that doesn't stop me from thinking it's cool and that it adds a lot to the historical tapestry of the G.I. Joe universe.

To each their own, I suppose.