Mac Pro :: Graphics Drivers And DirectX - OpenGL Performance

This seemed like the most logical place to ask this, since the Mac Pro forum seems to be where all the higher level hardware/software modification discussion is. Currently the Starcraft 2 beta is suffering from horrible performance problems. Many of the threads I've read on their support forums point to graphics drivers as the main culprit, with DirectX->OpenGL porting being close behind. The main problem with both seems to be shaders.

One thread I found, however, is in reference to performance on Hackintosh machines. Apparently Hackintosh users, who all use custom graphics drivers for specific graphics cards (ones not ever supported by OS X, like the GeForce 9800) are getting performance on par with boot camp users, at similar settings. So my question is this: is it possible to write custom graphics card drivers for normal mac users (I myself use a flashed 4870) that optimize the use of extensions for shader intensive games like SC2? If so, where should I start looking to figure out how?