I'm worried about GOTG, due to the franchise's relative obscurity and completely offbeat enough to scare off an audience that can accept radioactive spiders giving teenagers super powers, alternate planets that somehow inspired Norsk mythology, but a talking Raccoon and a talking plant?!?!
But yeah, TMNT will hit the same audience that Transformers get. People who grew up with it, and hate the movies so much they have no choice but to see the films to confirm how awful they are. That said, the previews have softened me up, and I'm willing to give it a chance and prove Kevin Eastman right about how we're all going to love this.
And optimistically, it seems that Playmates has learned its lesson from the last time. And if they didn't, Nick has complete ownership of the franchise, so they're not going to goad or control certain aspects of the turtles. That's why we got Fast Forward after season 4, instead of Season 5 which had blatantly toyetic concepts that Playmates didn't even bother with. Mainly because they destroyed the toyline with crappy variants. The movie is thankfully not influencing the franchise one way or another, at least in terms of merchandising. In fact, other than the movie toy line and a soda tie-in, I see more and more cartoon turtles stuff. So yeah, the cartoon is safe, thank Glob.