i think there should be no new map currently before the old maps arent fixed, but i have an idea on what the next map could be.
it would be called :
The Abandoned Weather Station, and is the mayak weatherstation, seen on map 1 in the game and other hn games and media. the purple lightning/mayak weather would be the only weather in the map. inside would be various broken things that would maybe have to be fixed in order to progress, like broken electrical doors, and there would be no basement door, but rather a big gate outside that would maybe need parts to be fixed and keys to unlock. there would be some metal rods outside where lightning can strike near the basement door, that can damage and kill you, to prevent neighbors from camping. there would also be some vents in the map that have to be opened with a wrench.