An almost solution for tanks in solo Shuffle (in my opinion)

What causes long queues in shuffle can be a mixture of things. But it isn’t the participation numbers per se.
For instant queues, as long as it doesn’t cause server queues (i.e. that the servers can’t keep up with the demand) then for every 2 DPS, there needs to be 1 healer or 1 prot pala queuing. For every 1 prot pala, there needs to be another prot pala queuing. For every non-prot pala tank, there needs to be 3 dps and 2 healers queuing.
And this is just what’s needed in the same starting matchmaking parameters, for there to be instant queues.

So if there’s 4 dps for every 1 healer or 1 prot pala, queues increase a bit. If there’s an uneven amount of prot palas, queues can increase a bit more for the people the system is planning to match up with that prot pala that hasn’t found a matching prot pala yet.

And this can be different between different rating ranges. So one range can have a perfect mixture of DPS and healers and prot palas, while another might have too many healers and prot palas, while another might have too many DPSers.

So what the system does, is that the longer time a player spends in the queue, the more it expands the matchmaking parameters ±, until it finds a match. Which affects other ranges too.

Anyway, high ratings very often tends to have poor queue times.

But I’ve already explained to that DH tank, however he’s just a really sore loser who doesn’t understand what he’s told, that queue times will be adjusted by the player base itself eventually.

See, that DH tank is telling himself those self-comforting lies because he just can’t accept the fact that he’s the scum of arenas, and players don’t want him in it.

What’s funny is that I can already provide examples of how the player base adjusts it on their own:

^ That person has nothing to do with the conversation, but the impact it had on him to want to swap to healing sometimes is exactly the effect I described that’ll keep spreading in the player base, to varying degrees. The DH tank just doesn’t want to accept it.