DONT ALLOW PEOPLE TO GIVE FRIEND REQUESTS UNTIL THEY ARE LEVEL FIVE
Simple fix for the 7 (yes, seven) people who added me this week with adds to elo boosting. Lots of games have similar things, WOW doesnt let free accounts to have friends for similar reasons. Of course i do think new players should be able to play with their real life friends, so make it so that anyone can friend new accounts, but new accounts cant add people. Level 5 is a good point where real players can get to it after a short while, but its enough of a hassle that it can deter some (not all, i cant make that promise) scammers