Also, what exactly is wrong with the new ones so people know not to add similar features in more maps?
The big problem with the new maps is the spawns. The spawns are bad, bad, bad.
There's that one map where the defenders only spawn in that little room that's connected to the rest of the map by a tiny bridge.
There's another map where the attackers reach the outer walls before the defenders.
And don't even get me started on that god awful underground map.
I would also argue that the new maps are too large for the amount of players that are usually in siege.
