I would like to know if you would approve of this idea.
The principle is simple.
Right after clicking "Find Match" to confirm queuing, the client test the ping and display it so the player can confirm that he wishes to continue with such a ping (and why not disable people with really bad ping to queue for ranked - it may be unjust for people who want to play, but no, you don't ranked with such bad ping).
The principle is the same as XSplit Broadcaster's "Setup wizard..." which automatically configures the best setting in function of the best ingest server's ping.
That's all folks.