I don't know, might have something to do with it being one of the most watched shows ever.
I wanted to see Bebop & Rocksteady in the the original tmnt movies, so I think it would be great.
If they do make a sequel, they should better the turtles appearance, at least take away their noses.
Wouldn't mind seeing a live action X-men TV series, as long as it's done with the same quality of the films.