i would raise it even to 10 but there are still people who think its too much lol
instead of remaking shit, add something new.. vertigo isnt new because it has been there since the beginning
personally i would like to see maps like Assault, Aztec in active map pool, especially Assault, the only hostage map that is trully awesome (but needs remake)
Make Cobblestone great again
In bo3 this will not make any sense
+office as office is the bestest map in the game
dust2, cache, mirage, overpass, cobblestone, train and inferno.
You can definitely increase the map-pool for matchmaking and casual and stuff but not for the pro-scene and the reason for this is practice-time. It would be too difficult for the pros to practice all the maps in the pool if there were too many of them. This would make pro-teams practice only some maps and let the others be decided randomly. 7 maps is already a lot of maps to even try to master properly.
if only cobble and cache had stayed instead of d2 and vertigo.. I feel i use (and my mates) use 2 mollys long and 1 cat only to retake b with only 2-3 flashes and that how it works for d2 and i feel 1good awp can ezily carry thruout t side