Being able to favourite a sheet within Sharepoint/Onedrive without having to use web browser favourites/bookmarks
I think the title speaks for itself, just a nice simple feature that would be handy.
I think I understand what you mean. If there is a shared spread sheet it would be useful to have something to flag/link/tag it somehow to my onedrive so I can access it again. Saving it to my onedrive means I would then have a copy and not the original so if the original changes I'm disadvantaged.
Google allows you to "star" a document that is shared with you and this goes into a "stared" category on Google Drive...this works well and means I don't , as suggested above, have to use the web browser favourites to find something again.