There's no voting this time round, so the maps are just based on server rotation, which unfortunately seems a bit broken. Though saying that I am aware about the removal of the night-time maps so I understand why I'm not seeing those, it's just the few others that hardly ever come up that's strange. In my experience it's a common issue with COD titles at launch, though not understandable why it continues to be a problem.
I read the night maps will be introduced (or maybe already have been) as a separate playlist, due to them requiring bespoke equipment. Though why they can't exist along the other maps and require the player to have a ready-made class especially for them I'm not sure.