If technically possible you should consider combining low population server instances for PvE areas to reach a semi-optimal population goal.
The way the game is now this seems feasible as long as you didn’t code yourself into a cornder in regards to server separation. As a player It would be fairly difficult to notice/care if SBI, Ferg, and IoJ instance of Queensdale were suddenly all shared to meet a instance performance/population goal. The benefits would be very noticable.
(PS. 45 character limit on title? really?)
!(wired)?(coffee++):(wired);