Actually it does not matter how many sequels there is. It is still their game they still decide not the community. Yes they may listen to the community at times but does not mean or should they with every little complaint about any change to how the game is.
demo was one of most spawn trapped, spawn killed game modes ever. When they tried to use dynamic spawns in MW3 people cried about it. No game mode should really ever have static spawns where spawn trapping/camping/killing is so easy to do as it was in demo. Which is probably why it was removed.