http://www.norlion.com/b5/main.html
I have a number of B5 maps there including that 2258 one. I haven't stuck the Mongoose one there yet.
I think Hyperspace would make the game very interesting. You could take a fleet from Centauri Prime and go all the way to Sol without going back to realspace. The EA would have to stick fleets in Hyperspace and real space to stop you. It makes defense much harder.