Pain in the *ss and we are trying to pay for a feature like this since 4 years 
More or less the feedback was âwe are the only ones looking for itâ and as you clearly can see, âmore importantâ thinks to develop.
The âworkaroundâ only works, if you as the admin is designing everything but anyhow is super time consuming compared to just edit and afterwards edit permissions/ownership
Create a view/dashboard dummy user and edit everything under it - only way to got.
And if a user edits something, merge the dashboard/view, by hand (edit files on disk) and merge.
Problem still exists if a user leaves the company. As soon as his folder is deleted as well, all views/dashboards of him are gone.
I can only ask you kindly to vote for this feature here:
Happy user editing! 