In a way, yes. A WIP thread there is for work in progress. I believe there are members there that would contribute, even if partially just in between projects. Having a WIP thread there where members of that community can post screenshots of their work is two fold for your project, 1.) Generates further awareness for the project, every bump of the thread is a free advertisement for you and 2.) The art will generate further excitement, feedback thus generating more enthusiasm for the art of your project.
Be prepared however, as that community is also open source, anyone can pick up Blender and be a user. What that means for you is that 1.) You will have to screen your contributors to achieve the quality you seek and more importantly 2.) They are bombarded daily with naive users with ambitious ideas so some of the community will respond with sarcasm. I urge you to ignore those responses as though they weren't posted.
I am completely confident that there are artists there that would love to contribute to this. I am confident that some persistent presence there could & would work to both communities interests. Show them (pictures, links, encourage them to try the game) what you've achieve as well, I firmly believe there will be excitement there.
Your team here has a good thing going, a good team has achieve good things. The Blenderartist community (maybe not on the outside, but once you get to know them better) is also a very good and helpful community. I personally would love to see both communities bloom from collaboration.
