You sure have a very puritanical view on what's pr0n. Must be talking from experience on your end because the last time I've ever visited gamefaqs have been five years ago because I couldn't figure out Silent Hill 4 at the time.
Nonetheless, be it Bass or Roll, so long as the game is awesome along with the music, it can do no wrong.
Co-op sounds something a rom hack would do, but it's great to know there's a chance of it happening; hopefully it will work flawlessly.
as usual, have some megaman,