Various warp point effects would be an amazing mod tool... like "create warp point - unstable X turns" where X can be any number up to 10 for example. Or "create warp point - random turns" where the worm hole will close spontaneously after a random number of turns. Then it would be so easy to simulate various types of FTL propulsion, etc. etc.
This might be asking for the sky, but how about "create warp point - unstable X ships" where any number of ships up to 10 can pass through before the worm hole colapses!? Of course "create warp point - unstable random ships" would be an obvious addition
Man, we could do some nifty stuff with this.