I feel part of the wait may be due to Tanks giving priority to friends, FC, and Link Shell mates. Like I noticed that lately whenever I queue into something, I am with someone and at times 2 other or even a full party. Rarely do I ever solo queue now. This reduces the number of slots that the tank's party has and thus anyone solo queueing is kind of getting leftovers.

So socializing more and getting into those Link Shells and FC's may be more important than ever.