The header "This page is a translated version of..." should be at
the bottom of the page by default and not at the top. It gets too much in the
way for reading.
One option would be to place it next (above/below) "This page was last modified
on..." since it's the same type of information.
Should I open a new request?
See Also:
T64702: Extension:Translate's languages box should look like interwiki language links