Here's a rather simple suggestion to make JQ less of a waiting game: Change the faction given out to be Kurzick and Luxon for winning.
For example: Kurzicks win 10-5. Kurzick players get 3500 Kurzick Faction and 3500 Luxon Faction. Luxon Players get 1250 Luxon Faction only. Since you lose one faction when trading in the other there will be no change to the 'game economy.'
I personally do not care about the lore or story involved, I'd just as soon kill a Juggernaut as cast Make Haste on it. I do hate waiting for 3-8 minutes AT LEAST EVERY MATCH. If a player could go join the Luxon side, get in quickly, and still get Kurzick faction it sure would help them move the titles along.
EDIT: My original idea was to join on either side and get end faction for both to shorten wait times on Kurzick side. A good alternative is given by tvalentijn below: "you could be in the Kurzick waiting area but get selected to play for the Luxon side since there are players needed on that side (and vice versa)" ... and still get either both KF and LF or at end get the faction which matches your guild's faction alliance.
F

a hell of alot better than waiting as well 

