Should we make this "show all tags" instead? In case they want to be clicked on?

I think retaining the tooltip is probably good regardless. We could additionally let you click the (...) tag to pop up a dialog of the other tags, I guess, but since no one has ever asked for that it doesn't seem too valuable to me offhand.

Well, I don't know how useful the tooltip really is, actually. It seems sort of nice but it's possible that no one ever uses it.

I'd guess the individual tags on stuff with 5+ tags probably isn't all that useful most of the time, maybe? Not really sure.