This will definately show my ignorance about coding, but...
I know in patch 6 you can have textures preloaded to system memory or, if you have sufficient video card memory to the video card. I think you must need 256 Meg of video card memory for that to work, yet a good number of people (myself included) have cards with 128 Meg. With that card (Radeon 9500 Pro) I notice I only use about 30 to 35 Meg, so there is obviously some residual capacity on the card.
My question is this: Is it possible to reprogram the game to have the program load the background scenery textures on the system memory and the plane textures on the video memory? My reasoning is that the video card memory is faster, and the times when I start to bog down is in furballs where there are a lot of planes around. If all the plane textures were loaded into video memory, would that speed things up a bit?
My guess is that if this would be helpful, you would have thought of this already, but it never hurts to ask.