"TIME TRAVEL" FEATURE.
Excel To include with time travel feature.This will facilitate to access back the file even if saved for erroneous data which will enable to access file for previous times status like 5min, 10min, 15min etc. back or before. In this way even file saved with heavy mistakes can be retrieved back to previous status and can be utilised for further work without redoing as whole.It is like restore to some known good configuration as in windows registry.
Before the recent iterations of Excel there were temporary files that I could go back to after major mistakes. Now there appear to be no temp files and previous versions are never available.