Since the GX Mooneys first came out, we have had two big changes that have required accomodation by the platform - WAAS and adsb. WAAS was eventually handled by Mooney/Garmin (although that path may not be available now to those that didn't convert?) and then adsb was accomplished by adding a 345 transponder (wasn't the transponder originally integrated with the G1000?). Both of these solutions occurred when Mooney was operational.
Problem is, we don't know what changes are likely to come in the next 20 years. Digital communications and clearance updates? New great circle routing that doesn't use fixes? Who knows. And the problem is that Mooney may not have an owner that is willing or able to fund these things (and assume liability if they fail) - or Mooney may not have an owner at all.
In addition to the major FAA-led changes like WAAS and adsb, there are other changes that have come from the tech world like touch screens and bluetooth streaming for data and route updates. It takes so many years to get a system FAA approved that, by the time it gets into an airplane, it is already years behind the private sector.
There are tons of jets that are stuck in this integrated platform world like the Beech premier, early falcons etc. Some of those planes have old crt screens that may not even be available anymore. Big problem.
So, if a GX owner really wanted out (I am not saying we are at that point yet...), what could they do? Could someone sift through all of the functionality of the G1000 system and figure out which parts could not be handled by a system containing a display, navigators, new autopilot, audio panel and transponder? Then create a new annunciator panel and incorporate those missing things? Then get an STC for that? Then could those Bravo and Ovation GX's just kind of return to the fold and be regular Bravos and Ovations? But what about the Acclaim? It was only ever certified with a G1000 and I don't think any of the above mentioned displays, navigators etc. have a Mooney TN on their approved model list. So that one would be tougher. Curious about whether this has been discussed or if any of it might be an option?