2. AFAIK, the original decision to add support to all the drivers was reversed, because some of the other developers didn't want to advertise support for a feature that would be so slow on their cards since it would have to use a software fallback.
Well... ATI advertised that the 9800 pro was OpenGL 2.0 while being 1.5... So can everything in Mesa/Gallium3D be mixed, softare and hardware acceleration at the same time? That would be awesome