[[Special:RecentChanges]] contains a few features that [[Special:Watchlist]], which is a very similar page, does not have. It would be more consistent, and convenient, if these two page would look and behave the same. With some refactoring, they could probably use mostly the same code.
These are the ones I found, possibly there are more:
- "Show/Hide anonymous users" missing in Watchlist
- "Show/Hide logged-in users" missing in Watchlist
- "Invert selection" next to namespace drop down menu missing in Watchlist
- "contribs" link behind editor missing in Watchlist
- order of currently available Show/Hide options differs