MODERATOR NOTE:
Your submission has been merged (see below). Please hop on over there and VOTE for it. For your vote to count, you must click the VOTE button at the top of the page.
=================
When the robot vac has updates to a map, I think it would be useful to be able to preview the new map before replacing the existing one. It can take some time to get an accurate map and losing it for a worse map is not fun.
Alternatively, a map history should be saved so that we can undo/revert to a previous map.