I was mulling over somethings the other day and came to some random vaguely connected thoughts.
• There should be more Wintery Place type portals. Just one feel inconsistent.
• Teleporting in and out could create little puffs of smoke.
• Cannons or catapults that shoot you great distances. Like the subways put send you directly from say Tamila to Charka Phool. It can either send you to a large net at the landing location... or maybe it has a small cluster of streets it randomly hits. (It's hard to aim those things.)
• It would be lovely if folks got onto subways when you were riding them. I have no idea it this is doable and would probably have to be only if the timing working just right. But it would be cool.