Blizz working on options for long queue times

Blizzard actually talked about it quite a bit, what they tried and different options they considered to try to help in a huge post here.
https://us.forums.blizzard.com/en/wow/t/addressing-population-concerns-in-wow-classic/499746

Yeah this is what I was reading as well. My whole point was that maybe it was ineffective, and it probably was ineffective, but you could still do it. Like it doesn't have to resolve most of the issue on its own. If it redistributes the population just a little bit, then it's a modest success.

But I think that Blizzard barring new accounts from rolling on the big servers is also a smart decision, especially ahead of BC.