Anti-loser-net measures needed

Multiple times, people have complained about bad lag during a match to the point where it affects their gameplay. Which means it affects the entire team.

I think this is a fairness bug. I would like to request that as soon as matchmaking starts, (ie: looking for a group, even!) that the client starts automatic net viability testing. If their connectivity sucks, then before the match starts, they should get an alert, "It appears that you are having network problems. We're sorry,but in order to be fair to your team members, this match will be cancelled". And then cancel it.

All the way to, and including, the champ select process.