From the OS ATI drivers, I would love them to have the power saving capabilities of fglrx.
From the FGLRX stand point, I would like to see XvBA released to the mainstream.
Getting all parts of nouveau (kernel, drm, mesa,...) into releases so that distros can pick it up. Even if it remains beta quality, at least it wouldn't be such a megahassle to try it out.
ATI can dump their binary blob as the open source ATI driver is rapidly moving towards blissful endings.
Nvidia better keep working on that sucker cause there is going to be problems that reverse engineers just can't ever get around.