ATM I can't see a good reason for players to retire, which has a knock on effect on how many people play on the server and on the general difficulty for every foe you encounter (which mostly impacts below average/newbie players - the guys who need looms the most)
Main culprites include high STF level, poor rewards for retiring, free respec and the game is too hard for people who aren't STF or higher
Not sure on the best course to take though, maybe increase rewards for high level retirement (not just loompoints..i'll retire an alt if I want that since I can free respec every week). A goody bag might be nice (assorted +3's, better reforge returns forever etc). Unique rewards, lower SF level, make the respec use a bit of XP etc
