I have, thats where I got the lightning idea.  However half the time FRED will screw up somewhere and save it without subspace or without nebulas.  The other half, my system crashes on mission loading 

.  The times it has worked correctly, it gave off a VERY nice attitude toward subspace, but the low visibility was a tad hindering.
As far as the FS2 POF goes, well, I just cant stand the way [V] screwed it up (sorry guys).  It's so horribly disfigured, it's pathetic.  OK, sue me for libel now 

.  Seriously, I think it should be replaced.  It just doesnt look right.
Finally, alternate subspace tunnels would be great, we can make unstable subspace jumps, or maybe even intrasystem tunnels 

.  It would rock 

.