Similar BRS can now be retrofitted to other GA aircraft - I have seen photos of them installed in C172 for example. That type has a rear window the rocket can exit from, YMMV in other types.
We seem to be getting a lot of tragic accidents this year. Every couple of weeks there appears to be another thread to discuss of one accident or another.
Aircraft have not developed much over the decades other than in avionics. Deformable structures, crash protection, fire protection and emergency shute systems have other than Cirrus been non existant.
Surely a retrofit would not just mean somewhere to place the shute but also the correct place re C of G and a clean deployement. Remember a magazine building one into a Europa?
Pace. I think that's a different discussion, though an interesting one.
Matt you are probably right could start a different thread on aircraft crash survivability?
Pace