Let's face it: any non-English Wikipedia contains much fewer articles that the English one. As a consequence of this, searching a local Wikipedia often leads to "no results". What is a user's need at this point? They still need a result. Any result. Sometimes a user also posesses English and other (to them) foreign languages. I think that it would be a great opportunity to let them continue the search in another wiki with one click.
Maybe this click could happen in the interwiki section, where currently some settings are hidden (as for me, it's unexpected to see it there). Or maybe somewhere else, but it general, it should be near.
Another use case here is that, for example, my mother tongue is Russian so I usually lurk around the Russian Wikipedia. But sometimes I suddenly need to search for something in the English one.
Current path: click the main page, switch to English, search there. Not sure why, but I just don't like that path. Maybe because it's counter-intuitive: I need to search but I click somewhere else instead (to the main page).
I wish I could:
- click Search - enter term - specify other wikis where to search.
- or click Search - (if not already added as a saved setting) add English wiki in settings - enter a term.


