This is one of my biggest frustrations with aviation— the certification required to get this done is hugely onerous. The whole basis of certified aircraft is that they may not change, which makes improvements like airframe parachutes, auto land systems, and even terrain awareness, engine monitoring, etc. very costly to obtain. I think there is an argument to be made that there should be a pathway to airframe recertification to allow for innovation and improvement to take place in the aviation industry.

Instead, the FAA is probably going backwards on this issue and doubling down on the regulatory framework that gave us the MAX-8 situation while narrowing any avenue for smaller firms to innovate [0]

[0] https://avbrief.com/faa-wants-to-phase-out-ders

It's not clear what caused the crash of the private jet carrying Greg Biffle and family. The Garmin Autoland system is designed to address pilot incapacitation, not mechanical failures or active pilot errors.