Even adding new tank jobs won't fix the issue of long queues for dps. As someone said, it isn't a roulette issue, even. More tank jobs won't make people want to play tank -- those that can stand tanking are tanks already and we still have a shortage. Many, like myself, only use my tank to help FC people or only tank when I am with friends/full FC party. The issue is the attitude that is so prevalent in DF where everyone wants to speed run, dps pull, don't listen, and/or are abusive to each other (this includes those tanks who use DF and are abusive to others). To me, it is a community problem based a lot on how SE designed the system to reward certain behaviors (speed runs to get max tomes/rewards in the quickest way possible). Until this kind of design and this kind of attitude players have, that their time and way of playing is somehow more important than others, changes, there won't be any short dps queues in the future no matter if there were 50 tank roles.