Just get rid of URF
People can't play for fun, so its useless to give them a fun mode, theyll tryhard it to the max.
All games are a roflstomp of who picked the most op champs, then the winning team doesnt even have the decency to finish, they have to spawn camp your nexus and kill you again and again.
Never underestimate the power of instant spammable sillences in a game where using your abilities is what's important.