No more than 2 people from either the last game, or people playing duo should be in blind pick. The rest should be saved for bots, or ranked.
It's blatantly hypocritical for riot to let a WHOLE PROFESSIONAL TEAM crush a bunch of misfits with no warning in blind pick, and I think we've all had the displeasure of running into them.
There's nothing BALANCED or FAIR about getting rekt by people who play with each other all the time.
I just got out of a match where this happened but the team said they had 2 from the last game...
THE WHOLE TEAM WAS PLAYING AS A GROUP! That contradiction made me report the whole team, and my own team didn't seem far from doing so either. It really sucked the fun out of the game.