Wiki.js

Images should be pasteable via clipboard ctrl+V as a shortcut, similar to how Github's MD editor works. This would be a gigantic time saver.

Currently when moving or renaming a page, all existing links point to the old page. The correct behaviour would be to update all links to the new page, either optional or explicit.

A modular notification system. Users, User groups, Admins can be notified about events. For example: Content events (new page, updated page, deleted page) Admin events (new registration, failed login attempts, failed git sync,....).

Support for child navigation items to allow dropdowns in the main navigation pane. If you have a large wiki, it can be hard to organize your pages without some type of collapsible navigation.

When a user created or edited a page, it wont publish right away, rather have a admin or higher lever user to approve the modification, then publish.

Looking for a nice way to share (formatted) wiki pages with external links intact

Give the option to change favicon via administration

Have a template or transclusion function, just like in MediaWiki( https://www.mediawiki.org/wiki/Help:Templates ), which would give people the ability to create infoboxes or other types of templates that are used on many other wikis.

Save current state of the buffer when editing a page, so in case the page is closed or the browser crashes, the work is not lost. This would work better with a warning when the page has been changed since the time the draft was saved.

Writing tables in markdown is very difficult and annoying. It would be nice if you could add this ( https://github.com/susisu/mte-kernel ) or similar package to handle them. This looks easy to implement, and could improve markdown a lot. A little effort will bring many benefits.