Query translation memory?

ElasticSearch is currently overloaded, so I wouldn't take today's behaviour as representative. Most of the issues are tracked at phabricator:T48484.

As for adding more interface elements, we know that TUX maintainers are firmly opposed...

Well, I shall see, if I can find a decent solution for this. It would not be used often, at least not by me on twn, but rather on Meta wiki.