The R200 drivers were already heavily optimized.
As per Rob here, no further optimization of the Mac Mini video drivers is likely.
The R200 drivers have been optimized for almost a decade.
Time to more onward and upward.
I knew there was definite room for improvement in the R300 drivers.
Next we get a 'clean up' revision (rev 3.5), and in 3.6...some even more interesting features.
This kind of steady improvement is one of MorphIS' strong points.