After changes in editor, allow a "hover" function to be made active, when hovering over a particular cell the previous value is made visible as a ghost image.

And / or, you do have an un-do function, but there is no way to re-do and un-do. That could compliment the above. I would pay more $ to have either of these functions!

Allow user to take scanned data, make a correction on scan for bad or missing data, copy paste into editor. Sweet!

Make auto database integration into excel, to and from.

tt