There's a serious issue with queue health in normal draft games

I could have sworn that this wasn't a thing, but recently I was duo with a friend in normal draft, with a team full of randoms that aren't queued up together, and we went up against a full 5-man. I feel that this is a serious issue for queue health, as essentially one team is playing solo queue and another is playing 5v5 teams. I feel that only 5-mans should be able to find other 5-mans, or possibly 4-mans if queue speed requires it. Thoughts?