Another really bad problem is the instability with xv/textured video. It must not happen that those freezes are reproducible and happening for now 4 releases already (or even more?). I think it is really bad if playing video is able to freeze all of the system and this one was already mentioned very often by now.
I think those two problems are very common and already in the driver for a long time. As such they do deserve some attention since IMO new features like overdrive and crossfire are basically worthless when the driver is not stable in "general mixed usage". IMO in this case stability is more important than new features.
In the case of textured video: yes, it is/was basically a new feature. But I expect new features to be stabilized in more recent version, not having them stay unstable.
I really appreciate you being here and the forums and looking at things. And I *love* the open source efforts of amd/ati which was the sole reason why I bought my hd3850. If there would not have been this effort, I would probably still be on a agp system with my good old 9800pro and (rock solid) open source drivers.