As I hoped, CS:GO’s appearance on Steam Workshop eased the map drought irking Global Offensive players since launch. About 700 Defusal, Hostage Rescue, Deathmatch, Arms Race, and other maps now populate Steam Workshop, and all are available for easy download (and auto-updating) through Steam. I’ve played a bunch of them with our community over the past week.
Counter Strike maps
More people—maybe twice as many—seem to be playing the original version of Counter-Strike than Global Offensive. Look here. Why hasn't CS:GO inherited its elders' popularity? I'd blame the map drought GO has experienced. New official maps have been hard to come by since the game launched in August, and the fresh ones introduced by GO were restricted to Demolition and Arms Race modes.