[Feature Request] After Crash, load older blueprint from folder

Unreal 4.9.2.
Sometimes i get a lot of crash and sometimes these crash are related to my blueprint.
when these thing occur, the loading screen run to 99% and then crash , without letting me open my project.
i am forced to go in the saved folder and pick up from there an older version of my blueprint. and replace it.

Sure , should be awesome that the engine could open the corrupted file , and just dont load the corrupted part…
By the way, still be awesome get an option like:
The crash occur during the loading of you “AwesomeBlueprintForMonsters” would you like to load a previously saved blueprint that got the date " 8/11/2015 14:20 ? "

Anyway thanks for all your work in the awesome unrealengine .