From: Henneth Anûn
Oh, I had forgotten this thread! Actually, I play with hyperspeed value set to 0.5, and it does seem to work, although I haven't really tested, comparing to 1.0.
As for a negative value, I have not tried it but should prove interesting, since if it works, then no ship could move, supposedly.
Imagine... the universe at a stand-still... kinda reminds me of MOO2 and the hyperspace blockade due to certain nasty space monsters.