I really enjoyed JTL (the only reason i subscribed to SWG in fact) and thought they did a great job, I hope they implement something along similar lines further down the road.
btw - in some of the TOR space gameplay videos i've been watching you seem to get xp from killing things and completing missions - is this different to normal xp? (ie, could you in theory level your character purely through space flight? not that i'd want to, just curious)
Ugh....Jump to Lightspeed was the straw that broke the camel's back and made me cancel my SWG subscription.
And yes, you COULD level exclusively in space. The quests for the space missions are repeatable. Plus you get fairly minor amounts of XP for each kill you make in space, but it does add up eventually. A couple of times I've leveled mid-mission.