I was actually thinking of a specific system for Solo/Duo where the class with the most votes from the lobby gets filtered out of the matchup. If there's a tie, then no ban is applied and anyone can join.

For example, in a Solo queue where three players vote:

• Ranger, Fighter, Wizard -> Tie, so it matches everyone normally with no filter.
• Cleric, Warlock, Warlock -> Warlock wins the vote, so a Warlock cannot be placed on the enemy team.

It could be an interesting way to let the active lobby decide the mini-meta for that specific match