Yeah, have a Ubiquiti home network, and want to optimize placement of my access points (before I install mounts on the walls/ceiling) and also would like to use it to compare different APs to see if an upgrade makes sense vs installing an extra AP for the garage that doesn't get good signal.
So you want a feature in a device that you're going to use for a single purpose one time? How many times do you need to map your house once you have the map? There's gotta be a better single use device for purpose rather than having it limit your options for a non-single purpose device.
I'm applying your yes response to the final question of there's gotta be a better way than your request for an rarely used feature in a reduced feature device.