Adding a connection test before games(Especially ranking games)

You guys have no idea how frustrating when one or more teammates having connection issues? I am pretty sure you guys know the feeling! Even though my teammate AFK. I still lose the points. If the teammates are intentionally AFK, I won't complain about it. However, many players have very obviously connection problem before the games. This would totally destroy the game experience. SO please add a connection test before the games!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!