I am not familiar with the „aircraft building“ aspect of the SDK myself (I am coming from the „SimConnect“ side ;)), but one would think that accessing the „game options“ like crash/stress/engine failure would be basic functionality.
I hope you are reporting those deficiencies of the SDK to Asobo, to improve their SDK for you aircraft developers.
Oh, and I haven‘t checked for a while, but if you could support the „CANOPY OPEN“ simulation variable, that would be great