to be honest its not really treyarch its more activison, i mean look at EA almost all there games BFBC2, MOH ect if you buy new you get online pass code which entitles you to free dlc, yes they then sell off major stuff, onslaught vietnam but thats £7.50 ect so basicly i get free maps and game modes and if i want i can buy major extra stuff for less than 5 maps on an activison game