In Game Queue Health Status
Instead of allowing people to queue up into low quality match making, why not put an indicator in game that shows them the current health?
For instance, I just played a 3v3 Flex Queue game where I had 2 team mates that were both silver. They weren't even high elo 3s and it showed in their playstyle, they didn't know the basics. They literally recalled after every wave or 2 because they figured it was a close enough walk that they could just keep buying small things here and there or keep themselves topped up on mana; they fell levels behind in no time.
It would have been nice if there was an indictator to let me know that theres no one at my rank playing so I have the OPTION to play another queue or go into a game where I'm gonna have less than average team mates.