Of course I still play it! But to avoid the Xbox Live Thug, constant modders and everyone 10 people that claim to have a 10th prestige Hack I play ALOT of private matchs.
Some modes we like are
Various Gun only battles -
Only AS-12, Only M9, Only ACR, etc, etc battles
Riot Shield Battles -
Pretty simple win a TeamDeathmatch with only riot shield
RPG battles -
RPGs and scavanger pro or One Man Army on
Throwing Knife War -
Throwing knifes and smoke grendes only with Scavanger pro on
Jason Mode -
One guy is Jason and can only use knifes while the other guys have to either hide or run from him. If your the last one alive you can finnaly try to kill "jason" or get killed yourself (knives only) *Better with ALOT of people
Wolf Hunt -
One Wolf that can only use knifes and the others (hunters) use only shotguns. But only headshots can kill.
President Assassination -
Everyone has low health and hardcore mode is on. A group of snipers (Intervention only) has to kill the President or take our his bodyguards first and then kill him. The president cannot use any guns, the bodyguards can only use riotshields and pistols.
Running Rabbit -
3 minute countdown. One guy with Marthon and Lightweight on runs around the map (Favala or Scrapyard is the Best) but the only way you can kill the rabbit is with C4 or Claymores.
And yes even Hide -n- Seek -
I'm not going to explan that one
See we have fun on our own and I dare you too please try some custom modes but it will take a level of honesty from your fellow players so these modes are best done with good friends!