Last I heared Aaron Dembski-Bowden did some writing for it as well, should be good, one thing the GW movie did right was the VA's.
Like, literally right after this was released, GW gave him more or less full approval, along with ADB as a writer, and he has several other people (including dedicated animators, etc) working on it with him. AFAIK most of those people are coworkers or contacts he knows in Ubisoft and other companies.
I'm still waiting for this movie to come out, it's been a long time, even though they did say they would finish by this year...
Have to seriously admire the transparency and updates on this film. As long a wait as it has been, they have repeatedly proven they're still working on this stuff bit by bit.
