Yeah, it should be pretty easy to add an LTE modem. Configuring the networking failover might take some hands on work; it would be a huge boon if either or both

Yeah, it should be pretty easy to add an LTE modem. Configuring the networking failover might take some hands on work; it would be a huge boon if either or both projects eventually took care of that for you too. I've had enough experiences where out of band management would be well worth the cost of the cell service that this is something I could see having wide appeal.