Okay, first thing first, there needs to be a knossos variant.
Second thing, at one point, due to a code bug in 3.6.5 or somthing, i had env-mapping applied to subspace vortexes, it would be cool if we could still apply an envmap to the portal, but it wouldnt use the mission enviroment map, but rather a funky subspace blue swirls prerendered env-map (except mabye in a subspace mission it would use a stars env-map). anyways, you'd use a rather low-res shinemap to apply this towards only the center of the texture, to avoid funkiness around the edges of the subspace 3d model.
Oh, and i like it.