I understand what OP is trying to say and one of the reasons I leveled WHM was because it got quicker queues then BRD was. I love playing BRD but I tended to play more WHM because I could easily get a group in less then 5 minutes as a WHM. I think a big help would be another healer class to go with the new tank class in the expansion. Also make these new classes disciples so they can be tanking and healing from level 1 because dungeons below 30 can only rely on 1 healer if there are no SCH doing lower dungeons since ARC is counted as a DPS.

Another thing that might help is if the SMN is tweeked to go as a healer too like how in XI it could be a healer and DPS. I don't know if that would throw off the mechanics of that job but it is a thought.