@will, some while ago I already launched a topic for an “industrial grade electron”, you can find it here Industrial grade electron possible in the future?
Besides temperature and humidity, the connection to the battery seems pretty important as well, since it should be shock resistant for some applications on transportation devices). But it would be great if the battery would be exposed on pins and not a connector on the electron itself, so that the height of the electron is not too big. I have a project actually where this is a problem to fit it inside a very low housing.
Besides an industrial garde electron it would be nice to have 1 (more expensive I understand) device that could handle all sorts of communications like mobile (2G, 3G and 4G at once, as well as wifi and ethernet, I see a big opportunity for these kinds of devices acting as gateways to connect existing devices to the cloud with minimal impact (not having to redesign the whole product).