CP, are you sure you used the latest version of the mediaVP? I've been looking through the copy on my computer and the nback* graphics are very different from the ones in your VP. Was that on purpose?
I guess nobody read the big post I made.

Yes, that was intentional. The idea is that the lesser the color fluctuation in the nbacks is, the harder it will be to see them through the poofs from the side views, making the poofs look more numerous and the nebula look denser, so a single uniform color (an average of all the existing colors) would be the best solution.
As I said, this is not noticeable right now due to bugs with the hardware poofs, but try playing a nebula mission with -2d_poof or with the original FS2 1.2, use the previous (or original) nbacks and look through the side views while moving forward to see what I was talking about earlier. After doing this for a little while, it becomes clear that the poofs are only around your ship and nowhere else; while this is of course true, it is a developer trick that probably shouldn't be so obvious.

The ones in the effects vp were better than the originals with their smoother gradients but still had that side view problem.
Your changes, esp. the beams, look pretty good though.
Thanks. I might change those a bit though, as I'm still not perfectly satisfied with them, but they should work for the time being.
and I know it only fills ~800 pixels of the image. However, I aligned it to 2^n so the next stop is 1024x1024. I still think the game should 'mipmap' the background images (looking up which size was used and downscaling them if the size is not needed) - this would give best looks and quite a performance boost.
yeah that would be very nice, although I think it would only work for background images. (since those will not be changing size during the mission)