Hungry Hills - 48 player map, I don't play on those servers but there was a LOT of people who wanted it back.
Moonlight Lake - This was apparently removed? (View post above)
Vida Cova - Still voted fairly often
Wyverns Wake - I played it today.
Castle Dracula - Of the few times I've been on 48 player servers, it's been voted a lot.
Lost Ridge - Removed..?
Kharmunrah - One of the nostalgic maps. It hasn't been removed yet, and is still fairly popular on 48 servers
Teweran Survival Games - Again, nostalgic. MCSG also has TSG2 and TSG3. Remove one, you have to remove all.
Fortess Pyke - Yes, this one is rarely played.
Fallen Empire - People like it, but people keep trash talking it in lobbies
Rugged Lands - As far as I've seen, it's still fairly popular, just not as much as some maps.
Survival Games 2 - You can't just remove SG2. It's one of the only 2 maps on SG Classic, and if you removed it then you'd be losing one of the most famous maps of all Survival Games/Hunger Games servers.