Lancers Reactor has some nice ones
here.
Essentially I think what people want (and me too) is this:
1) Enhanced framerates and better visual quality - specular highlights, no-dim lights in D3D, bump mapping, trilinear filtering (I don't think FS2 does it and I think it helps give that nice smooth graphical feel to things)
2) Greater environment interaction - better control over debris, asteroid fields, a better background system so more detailed background nebula can be setup (i'm not sure how other games do this, but FreeLancer can do this nifty detailed backgrounds and I can't do this with FS2 at present), sun and ambient light controls beyond the current abilities (ambient control is a hacked and slash version of what it could be)
3) Little things - such as particle effect weapons, real laser trails (adding a missile trail draws the trail at the edge of the bitmap rather than center), pcx muzzle flashes, sun lense flares
I would take advantage of all of that stuff (and its general enough that everyone else could and would as well) in Paradigm Shift. Keep in mind that its a wish list....and its a long term kind of thing so I want to express that I don't expect you guys to perform miracles overnight or if its way too far out on a limb, not at all.
There's more exotic things like more model movement control and whatnot but we need the tools and the programming to do it and we don't really have that right now.