For me its only 2 possibilities:
1) get flight to be flexible in pvp
2) dont get flight, get SJ and have a toon thats capable of dealing/receiving good amounts of damage 
corruptors/dominators most likely fall under 1), whereas brutes/stalkers probably want SJ because of the defense bonus (CJ).
and MMs... well i dont like them at all
but thats just my personal gusto.. 
Hey, that's not such a bad idea! You might find it a little hard controlling where you end up, since SJ is pretty fast and goes very high - you could easily end up out of range. Nice idea tho, worth a try! I might even respec one of my guys to it!
IN MEMORIUM OF GAYBABY
CRUELY TAKEN FROM THIS WORLD WHILE SO YOUNG
I took teleport with my corruptor. And then the x-mess Jet-pack, travelling around have become really easy. So I guess I will tale hover when I can fit it in (instead of group TP). It will properly be better then SJ in regards to getting away. Works very well in PvE, do know for PvP, as I have not really been involved in that yet. But it should work... one quick TP and you can be up to 100m in any direction getting ready to fire off you snipe attack.
What do you think? I haven't tried it out yet, but I think it can be a useful combination in massive PvP situations, as you can just SJ, toggle hover on, toggle SJ off and blast away, avoiding those pesky little heroes who hit you every time you come back to the ground after jumping (which wastes a lot of SP, but is very dangerous without in PvP- since you can get stun-locked and die instantly)...
Please discuss :3