They have done some things to help DPS players not rely solely on DF queues to level. There are FATEs, tribe quests, daily hunts, Squadrons, Trusts, PoTD/HoH, and they will eventually expand the duty support system into HW and SB leveling dungeons. I am aware that the other options aren't ideal, and just not as fun as running a dungeon with other peeps. It is what it is though. There are just far more players running as DPS jobs at any given time, and there are never enough tanks and healers to accommodate them all. This is why increasing the number of DPS players from 2 to 3 won't do anything, and might even have an adverse effect.

If it is any consolation, just about any and all solo activity is far better as a DPS job. When engaging enemies solo, they get to utilize more of their kits than tanks and healers as a lot of their skills are there to support a party. And considering MSQ solo fights are designed so any job can complete them, doing them as a DPS makes them far more exciting and fun to do. Makes me want to start up a NG+ to do the new Cape Westwind and Lahabrea battles.

Just stick it out like everyone else. Hopefully with shorter queue times in the near future.