Honestly never expected that you'd release overworld tileset next, it almost feels like a complete set of fantasy tilesets now.
I think the only stuff it lacks to be trully complete are Desert Tiles. The only critique I could think of is that Exterior tileset feels like it would fare better as two separate tilesets, it does its job decently, but it feels like it could be much more if it was a two separate tilesets where one is focused on Countryside and Nature and the other one is focused on Cities and Towns.