since there is so much smurfing going on

Just implement a "switch account" button, instead of having to reopen the client... Might as well when smurfing is so common. You know what else would be nice, notifying on the loading screen if two individuals are playing duo in SOLO Q. It'd also be cool if the loading screen showed basic stats. Like the overall win rate, just so I can expect the ass fucking from the 60% + win rate smurf with 80% + win rate on his champ.. without having to go to a third party.