A distinct lack of advanced video/graphics options seems to be common amongst multiplatform UE3 releases, which is strange considering the bevy of such settings tucked away in the ini files.
From messing with the UDK, I felt like it would be a pain to get some sort of graphical system set up to modify/write/whatever config files.
It's probably possible, and perhaps even easy, but I could see how someone wouldn't do it.
Mirror's Edge came out ages ago with its decent AA options (though I got white speckles with 8xQAA and don't know how to fix that), and I never did find a way to reproduce it. For a while I think only 4xMSAA was supported even in the ini files.
What the fuck is Dota 2 doing to my hard drive? It's like it's raping it with every update.
If you dig back through the thread, you may find several posts by me and other people complaining about this. I think my hard disk typically goes crazy loud for 5-10 minutes, and for maybe 5 of those the system can become almost completely unresponsive. My vague understanding of it is that due to the new Steam content system, some huge amount of game files get copied to a temporary directory, then patched in place, then copied back. I don't know if DOTA 2 is just especially bad at this, or if we can look forward to any game on Steam doing this in the future.