I was wondering how you are planning to handle the energy manaement and gliding in Fringe Space.
First the definately possible: Gliding.
In Tachyon glide would take over the speed and direction you had when you activated it, unless some other force changed it. In other words you could afterburn to topspeed, activate glide and thus cruise at afterburner speed forever (or as long as you reached the map boundery I suppose). That's also how glide was originally implemented in the first TBP release.
Later in FSO it was changed that you drop back to maximal non-afterburner speed, even while gliding.
So the question is, will you do it the FSO or original Tachyon style?
As for the energy management, is it even possible in FS2 to make an energy management system like Tachyon had?
For those who never played Tachyon, there the ems worked pretty much like FS2s, but with the difference that excess energy was distributed among the other systems. So if your weapons energy is fully loaded, all your other systems (shields, afterburner reserve and engines) get more power, untill you use up some of that weapon energy.