GVE edition - Jump pack.
Edit: Which is why I doubt we'd see something like this - the fact that people paid for it as part of a specific edition, so it won't be given away free.
Also, it's pretty easy to hit the hard cap on all of the travel modes, even Flight now that it has been buffed a bit. If you're at the hard cap, a booster does nothing for you.
http://www.fimfiction.net/story/36641/My-Little-Exalt
Didn't see this suggestion when I did a search, so here goes... Why not put in a travel power booster? Something like an Afterburner for flight... Give like 30 seconds of 25-50% speed/range boost on your travel power, and then require it be recharged (time or perhaps combat xp). This would make some of the travel powers feel a little more "super" at times, and make some of those long travel legs (Shard TFs anyone?) less annoying...
Just something to ponder.