'Our' cause? What level of experience do you have programming? How well do you know IOKit? Are you up-to-date on Apple's progress getting basic 2D functioning with the V3/V5? are you familiar with the actual programming linkages between all the parts in the IOGraphics subsystem?
Hell, give me a good enough reason, I will hand over all my current documentation on the stuff, (legally, since I figured it out from publically available source and documentation) and be a helping hand. However, you are being rather vague as to what you know, and what you can do. I sure wouldn't mind joining efforts, but you got to show me that you can pull enough weight to help make this work.
(If you couldn't guess, I have been at this awhile, and have learned a great deal, but am no closer to getting 3D acceleration going than anyone else in actual reality due to vague documentation of Linux source code for simple 3D acceleration used on the V5s)