Is XRender accaleration planned for the proprietary driver?
The current version is based on XAA and only accalerates a small subset of render operations.

NVidia is currently working on enhanced XRender acceleration, and also Intel/Via/Nouveau drivers are capable of accalerating it - so the proprietary ATI driver will soon be the only driver not offering hw accaleration.

Maybe the 2D part could be thrown out and replaced with RadeonHD sometime soon, at least for HD2/3/4 cars?

Thanks, Clemens