I'm determined to rank up, but I've played thousands of games. My highest level is in team slayer and I can still rank up.. but it takes forever. I was thinking that if I could figure out which playlist I have the least games in.. or at least the least losses.. I could try and use that playlist to rank up instead. An easy answer would be to look at my playlist exp in the lobby, but this account is old so most of my games were played before that feature was added.