It would help if users could see, at a glance, which connection type is active at any given time (Cellular vs. Iridium). Beyond that, if a connection drops, it would help to know why. Right now, when users lose track of an aircraft, there's no way to tell whether it's due to coverage gaps, terrain, a unit malfunction, or (most critically) a crash.
Given the stakes, I'd prioritize crash detection first, since that's the piece that actually matters most, before investing further in the broader connection-detail work.