This is something I am waiting for since like ages. I can't remember how large the block-list is currently, but it's not large enough.
Since everyone says to mute and block toxic people after a game and this game is literally full of toxic people, the block-list should have no limit or at least a very high one otherwise it's just useless to keep blocking people. Some of them are even mad enough to add you as a friend and continue their insults via private chat. That's just hilarious.