1. nVidia has working graphics? Cool, now how about that K-M-fscking-S for starters?
2. Point me to a graphics card that is still in use that is not fully accelerating X.org due to driver difficiency.
3. Point me to a driver that has slower 2D performance than nVidia's blob.
So X.org should not care about that blob because it simply works with all cards. Period.
What is needed than? Ow I get it: if you want to runs games than nVidia's blob is required and if you can't run X than you're screwed. So what's the problem? X? No it is Mesa. If nVidia would just only release a blob that can slide in place with the Noveau driver and add some (note: not IP/patent/copyright-ridden) FLOSS voltage controll and standby stuff to Noveau than problem solved!
What are we even talking about here?