Nest sounds cool. I like the remote off, with no remote device. Could be voice activated instead and that might solve the problem.
This has the potential for a lot of very interesting things. It is a platform for sensors.
Smoke
Fire
CO
CO2
Humidity
Temperature
Air Pressure
Motion Sensor (earthquake)
PA/mic
Camera
WiFi extender ...
Put one outside too. Network and log the data.
Then for people who want to participate, send the data to the weather bureau folks for collecting some seriously large aggregates of data on the environment.
Also useful for businesses. e.g., monitoring processing work rooms, refrigerators and freezers.
There is so much potential here. And if they are manufactured in sufficient quantity it will drive the unit cost down which will lower the price which will increase market penetration so we have nests in everyone's nests.
Right now I have too many different devices all serving these functions. I would rather have several nests around. Then, sure, one will fail but I'll just move a less vital one to it's location while I get a replacement (2 days on Amazon Prime). Hmm... Stick them to the ceiling or wall plate with a magnet. I use magnets for things like this all over the place - works great.