Dumb question.
The group and the individuals were way more dynamic and came first...no brainer. A dramatized Wu-Tang movie sounds like a good idea on the surface but I just don't know how well they could flesh something like that out. Look at the NWA movie and the screen time split between Dre, Cube and E...who are going to be the central characters for the Wu? Rza? Meth? Ghost? It's gonna be like 6 or 7 MC Ren's of he movie.
Meth is easily the biggest star and it's only so long you can follow that nikka around with a camera and watch him get high
A doc would probably be better even though I would still be excited to see it. Now a Jay/Nas movie set in the early/mid 90's where you can have cameos from all kinds of rappers while focusing on the two front runners would be gold.