Nothing about this map is logical, so don't worry about.
This is a really fun map to goof around in, but it's not just because of some gimmicky bullshit like Mario Kart or rocket-jumping maps. I would never try to have an actual balanced game in it because the edges and levels make griefing and spam too problematic, but there's a way for every class to have some ridiculous fun here.
Demoknights and airblast Pyros are the obvious choices to this map into a lunatic asylum, but the only classes that don't have the same potential are the Heavy and Medic. There are a lot of little rails and nooks for Spies to hide in. Engineers can build their stuff on lower levels where they're really hard to get at. Scouts with triple or quadruple jump can navigate all around and are hard to push off. Soldiers that are good at rocket jumping and air juggling can abuse the ledges almost as much as airblasts. The narrow walkways form beautiful, open air tunnels to snipe through.