I hope these have not yet been reported. I haven’t checked that.
Favorites - select your favorite categories
Detect spam TL0 users when using Akismet plugin
Add an newsletter email signup form to the Preferences > Email
Discourse 2.6.0.beta5 Release Notes
Post notices for first-time and returning users
Toggle to hide crawlers from Consolidated Pageviews
Support for wildcards in word censoring - #7 by neil
Merging tags - Tag Synonyms - #16 by neil
By the way, a custom flag type would make reporting more easy than bookmarking, adding a comment, and from time to time pasting them here and then cleaning up my bookmarks.