Feature Description: A heatmap layer of player activity with a slider for all time, last 6 months, last 3 months, last month, last week, and maybe last day. When updating the map it could update the heatmap data so overtime you could see where players built. Probably best to have this as an default off option for any servers preferring privacy of players. This could work and probably would be easiest on a chunk level.

• Additional context: *An example from reddit's /r/place.
  

this would get very resource-intensive on the storage side, and would require an entire overhaul of the way tiles are stored, idk if the dev is willing to do that.

Yes. That'd be quite cool and useful. Thanks

Would it update itself or just a render-it-out?

Before setting readonly the map can be fully rendered, after setting it, that map will not be updated unless that value is removed

this is somewhat doable now by using the readonly property of maps and creating a new map after setting that flag. does that suffice @ElectroBot ?

@ElectroBot the readonly flag has been added: #4007 hope this suffices your question