When using autosave LO should kip a file at the same directory (maybe hidden) which can keep tab of undo history.
And if such thing can exist, maybe add a “hold” function, which is save current document for further work in another time, while saving is indestructive of at least part of your work.
in both cases I do believe a file would require more time to open, however, less misshapps will happen.
