I'm looking for some features that is provided by jira and confluence and wondered if open project already has those:
adding wiki pages to work packages without having to put it in the description or as a comment, it should be shown as it's own category like the version number that the work package was fixed in
automatically linking wiki pages to work packages where the work package is mentioned in the wiki page
attachment macro that supports regex filtering that limits showing the uploaded files on a wiki page as a table that includes the file name, description, and date it was uploaded
grouping of files with the same name for versioning so I can either download the last version of it uploaded or any previous versions of it that were uploaded
hiding the files section of a wiki page when being viewed so that only those who can either edit the page or can see the files using the attachment macro
option that by default collapses code on a wiki page so it is a single line with the name shown, that you can then expand, while viewing the page