As a user, I want to be able to quickly navigate through changes (diffs) of content.

This is particularly the case for the header-area, which is likely to be regularly edited. Possibly also for topic-summaries.

I.e.
http://en.wikipedia.beta.wmflabs.org/w/index.php?title=Talk:Flow_QA&action=compare-header-revisions&header_newRevision=sc4jyjl2eaui59ij
should have ← Older edit and Newer edit → links, like
https://www.mediawiki.org/w/index.php?title=Flow&diff=prev&oldid=1345662
does.

including edit filter tags, eg https://en.wikipedia.org/w/index.php?title=Democratic_Party_%28United_States%29&diff=prev&oldid=594455920