The only real way to solve DPS queues

[Altena]

That may be one solution, but I feel that the lack of tanks primarily stems from the role being the least engaging/exciting. The entirety of this game's combat can be summarized as "Stand here/Don't stand here" and heavily impactstanking, since their gameplan is Flash/Unleash/OP and then pretend to deal damage (Unless you're WAR, then you deal actual, noticeable damage...). But there would need to be core changes to the combat system to rectify that.

That's rather subjective. While I do agree (even as a Tank main that raids), many tank mains would disagree with that sentiment. I suppose the combat changes will be a "wait and see" in terms of whether or not Tanks become more interesting to play.

I think there is little that can be truly done to incentivise new Tanks and Healers in all honesty.. You either enjoy tanking/healing or you don't. I honestly think there is little alternative to increasing the DPS ratio to healers/tanks.

I won't go into the damage debate in here as it's digressing a little too much from the topic.