I know this sounds really odd, but this makes sense with the program I intend to be reading my map’s data.
I would like to be able to give a cell a numeric value. Ideally, just be able to straight-up paint numeric values into my cells.
Either as a special kind of layer that takes numeric values, or as an unspecified attribute for the cell on a layer.
I imagine this could be very useful for all kinds of maps/games. For example, if someone wants to set encounter rates in an RPG. Personally I want to use this for setting Z/height values and also for brightness values, but there are a lot of ways it could be useful to just assign numbers that the game can read.
I was about to create a large collection of tiles that just have the numbers written on them, but it would be so much easier if I could just directly assign a numeric value in the editor.