Every time I want to make a new level, I copy an existing game object asset, and an existing tilemap. This is how I name them:
level_name.go
level_name.tilemap
It’s rather tedious to edit them though, because when I copy, I need to snipe the part right between the level_ prefix and the file extension to rename it, and then remove the "Copy of " part.
It would be nice if it didn’t add "Copy of " before the name, and if it didn’t show the file extension.
Minor thing, but annoying anyhow 