Ugh, people need to give up on the idea of separate queues for solo and groups. Blizz obviously doesn't want to do it and for good reason.
1. Longer queue times
2. 5 queue literally impossible
3. seperates the player base more
At this point, if I'm a solo queuers and I get put up against groups, I don't make a big deal. It's literally unavoidable in a MP game. The game tries to find equal numbers, but eventually, it's going to just try and find a game real quick because no one wants to sit in queue forever.