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 impacts tanking, 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.