Pretty much what I'm doing with my Sith Assassin and Jedi Sentinel. I'll resub when new personal story bits get added that amount to 30-40 hours worth of gameplay and that's it. If they add in cross-server LFD/LFR later on, I'll resub for for each major patch.
WoW, Phantasy Star Online 2, and GW2 will be my main games later this year.
As it stands, I'm resubbing for one more month, maybe too if I get another leveling itch for a Bounty Hunter.