Look, my point to object you claim is quite simple. To some aspect you are
right: I got somewhat working 3D acceleration inside Trisquel by following
the steps you described.
It was better than my last experience with Mesa 7.10 in Knoppix but (and that
is the important thing) it is a given fact that in the noveau wiki itself
they state that the older Gallium3d driver was replaced nearly a year ago
(Feb 2011).
From my observation in aptosid the newer driver works faster, more stable and
with less glitches.
If another Debian-based distribution has a better working open-source driver
for a rather common NVidia card as my 9800 I can hardly see a point why this
version isn't included in Trisquel. Thats all...