Wow so much good conversation.
I think making 1v1 only map gen was a bad move as a lot of people love the maps in rotation, and enjoy perfecting a map. Just look at sentons. A certain type of player loves memorizing and refining a build. A certain type of player hates memorizing and wants a purely level playing field and reading a map on the fly.
When 1v1 was set to mapgen only we were excluding a type of players preference so it is understandable that the game count when down. This also supports my theory that game count will go up if there is a mapgen only queue that complements the standard 1v1 queue.
I think 3v3 ate into 4v4 because it is fresh and new and if people queue both 3v3 will match first. Less chance of a single lagger messing up the game also.
Could we just try a 1v1 mapgen queue for a month and see what happens?
Facilitating players to more accurately express the game that they would like to play through queuing cant be a bad thing?