Exactly! The forward most part of the economy cabin is usually reserved for DL medallion members (the first 10 rows of the 777 do have power outlets for computers, 2 for each set of 3 seats). This preferred seating applies also to exit row seating that usually has more leg room, etc in most cases.
Some of the preferred seating may not have any other benefit that it being toward the front of the cabin, allowing for easier de-boarding/planing...^