This post is specifically for the audience that ladders. “Not the custom lobby players”.
An Idea to consider possibly.
Since matchmaking is now global, why have region accounts Ex: US West, US East, Europe Etc.
The Idea Limit to one account creation or 2.
Reasoning
The Player pool is already small, then add that a lot of players just make alt accounts with account names like hhjkshdfksdhfjk. This would discourage lower players from trying to climb since the possibility of a mismatch is even higher.
I know a lot of my friends that ladder, do it during the afternoon hours for South Korea since that’s when the highest player base is present for increasing mmr accuracy.