Wordpress finally needs to move more towards a CMS. They are marketing a powerful media management on Wordpress.org but that's what's included in Wordpress in pretty basic to me.

Heres what I woul'd like to see native in Wordpress in the future.
Pages:
* Native page tree view. The current view for pages is so outdated and not fitting for Wordpress as a CMS. I really like the way TYPO3 is handling it (https://docs.typo3.org/m/typo3/tutorial-editors/master/en-us/Pages/CreatingPages/Index.html)

Media:
* Folders in media. It's turning into a mess pretty fast, specially when using multi language tools.
* Replace image/video/doc
* Reference where image/video/doc is used

Again, TYPO3 is doing a way better job handling all the media for uploads, but I also understand that's it can be a little bit to much for regular people.

Permalinks:
1. Handling of internal links for media, pages and posts needs to be more dynamic. If you update the url of a post/page/file it should automatically update everywhere the link is used.

Gutenberg:
1. Meta data for images should automatically update when changing, after the image is already is use in pages/posts. This should only apply to images where the alt/title/caption was not edited to fit the content.