I've seen posts asking for a version history function, presumably something similar to what google docs has.

However, I would like to suggest an edit history function, where I get to see how exactly my document was built/written from the first stroke/text/picture to the last, like that of a timelapse. This would help a variety of users, such as people trying to build a mind map, where they would be able to not just visualize their thoughts, but also visualize the flow of their thoughts. This would also help students in seeing where their last annotation was or when any annotation was taken on a document filled with notes.

I understand that this function would be more complex in comparison to something like "version history" where it basically only has to save snapshots of the document at different intervals of time. Therefore, if difficulties arise in bringing this function to life, I hope that the proposal that making this feature available to toggle on/off for the use would resolve some of said difficulties.