Ranked Queue - Don't like the map? Leave. No penalties?..FIX IT!

Simple as stated. Everytime I join a ranked match lobby, if it’s not arena, someone leaves the queue and I have to requeue. I banned arena because I got sick of how often I got that map since every other one just gets dropped. Give these people bans, and if you already do then clearly the system is too lenient. Every other game that uses elo or mmr does.