I don't play Multi, and I haven't played "The Blade Itself" yet, but I had a thought (that perhaps someone else has had already, so humor me please), thought it could be somewhat difficult to implement. Although we've never seen this in any canon FS2 mission, it has been seen more than a few times in fan campaigns... Inferno R1 comes to mind... its subspace nano-jumping. It would certainly be useful and would definitely be an ability that at least some ships might be expected to have, but the trick is implementing it. What I was thinking (again, I'm in unknown territory here) is when you select the ability, you are prompted to provide a set of numbered key presses that correspond to direction and distance. The first figure (0-9 or perhaps 1-8 of you'd rather have 45 degree increments) would correspond to lateral direction, another figure (same numeric system) corresponding to vertical inclination, similar to Star Trek's blah-blah,-mark-blah-blah system. A third figure would correspond to distance in kilometers. All figures would be in relation to the ship's own perspective, rather than the the environment. Another option but a potentially more tricky one, could be a set of figures for ship orientation. The clincher would be that you'll only be able to nano-jump either so many times per mission, and/or within a certain interval, or risk overheating. It would also disable end-of-mission jump-out during the wait interval. Then it's just a matter of simulated effects and ship moving via sexps.
There are many obvious uses for this, such as the obvious of moving yourself into a more favorable attack vector against an opponent, protect a target of importance, or perhaps reaching a jumpnode. However, in a mission where your enemy can't nano-jump, it would also be useful to briefly move yourself out of range of enemy weapons while you conduct repairs.