Watch the movie, you will have the answer to that .
It is not a great fan film, but it was damn good effort and a unique spin by focusing on one of the secondary characters from a franchise. Also lot of cool nods to the other characters from the TMNT universe, fans will surely dig it if they stick through it.
I could see a Casey Jones movie working if it had the right people involved. It would have to be pretty violent and edgy though - a far departure from what we have seen in the TMNT movies.