[Timstone]

In stock SE IV there aren't different warppoints, but you can give them different abilities. Look at the Star Trek mod for inspiration. I don't know the right file where you can put that, I must check when I get home. But I think you'll have an answer by then from someone else.

And on a sidenote.
Almost every jumpgate was constructed by the Vorlons. They gave them to the younger races to stimulate their growth. ater on when the Centauri, Minbari and Humans went into space they constructed their own. There aren't any natural jumpgates, also when a jumpgate receives damage the chances are pretty darn high the thing won't work or just explodes. So battledamage is very unlikely.
There wereo only very few jumpgates destroyed during wars, because every race realizes the jumpgates are of great importance for the growth of their race and the commerce with the rest of the galaxy. I can recall only one incident of a jumpgate being destroyed as an act of war. I think it was during the second Narn-Centauri war (yes, the war during the B5 show), I believe the Narns destroyed one gate to stop the Centauri from advancing too fast towards them.
Also the jumpgate in the Dilgar system was destroyed, but that was due to the sun going supernova. It signaled the end of the Dilgar Invasion.