But dehumidification doesn’t need to be proactive, it’s entire point is to kick on when there’s too much humidity and turn off once it gets to where it’s set to. This is the kind of building a solution to a problem that doesn’t actually exist.
And you’re vastly underestimating how quickly diffusion works, especiallu for water vapor in air. When I take my shower in the morning the air very quickly saturates with humidity. I don’t have a very dry half of the room and a very humid half of the room. The entire room is humid. It doesn’t take 10 minutes for the humidity to diffuse into the dehumidifier. And then I leave the bathroom door open after which the humidity very quickly dissipates and equalizes the relatively high humidity of the very small bathroom into the comfortable humidity of the very large everywhere else that the small amount of humidity will have a negligible impact on.
I’m failing to see how putting more unnecessary stuff between the hygrometer and the cooling loop of a dehumidifier makes it better.
It sounds to me like your problem is human error, not the lack of a smarter machine. You can’t engineer your way around people being morons. The greatest engineering minds have figured that out years ago.