Other features I use often are:

* manage to-do-lists based on the page they occur, and/or their tags, deadlines and priority level.

* table of contents for a larger one page note

* auto git add/commit upon application start

What I would love to see is:

* automated and robust git push/pull with GUI based conflict resolvement so I could collaborate with colleagues who are not too comfi with git using zim

* organize pages using a nested tag structure (like gmail lables) instead of folder structure.