This will probably get some flak but I will say it anyways.
Since so many hosts boot people for having pings over 150 even though the game plays fine with pings up to 300, I think it would be better to represent pings with a Green, Yellow, Red icon. Maybe make Green 0-300, Yellow 301-450, and Red 451-*
Doing so would cause hosts to boot less as they would only see a symbol showing that the connection will be smooth.
Secondly, and I'm sure this will be a much more popular idea, please put a latency rating of games in the lobby (symbol, or at least a number) showing the speed to the host. That way it would save time for both hosts and players since people won't waste time joining games just to find out if they will have a high ping and get booted because of that.