I get that it's a testing environment, but how the hell are we supposed to test stuff if the people who JUST log on to play the new champ can't even do that in a custom game and proceed to leave EVERY. SINGLE. GAME. if they don't get what they want. We others resign to our fate and pick other stuff, but can't even get into a game because of that shit.
A lobby or something would be great if you're gonna restrict customs.
Also lag. How long have you been doing this, Riot? Seriously.