Well, I figure it wouldn't hurt to put in my own two cents... I'll be blunt about it, the graphics engine could use a bit of work before more features are added to it. I have an Nvidia Ion card with 895 MB graphics RAM (yes, I know that's a strange number, I didn't design it), but I get *tons* of graphical problems. I do have updated drivers, and the card isn't that old. I know other people that have solid black grounds, and many others that get a "hall of mirror" effect on things that it shouldn't appear on, myself included. To me, this shows that the graphics engine can really use some work.
Now coming at it as a programmer: It's obvious that there are bugs, and I really do not think adding more features that work on this buggy system is a good idea right now. If something breaks, everything dependent on it has a high chance of not only breaking as well, but making the real problem(s) harder to find and making it much harder to fix. I think, before more features are added to the graphics engine, some of the bugs should be ironed out. It will make gameplay smoother (or in some cases, possible or practical) and will be a nice, solid base to work on top of.
I know the devs are busy, especially since moving to Zeroping caused quite a few problems. This is just my two cents though; I wanted to point out something that has really been bothering not only me, but quite a few other people I know. If a bunch of the more critical bugs are ironed out, I know a lot of PSers that will be very happy.