Raising the bar for tenure makes little sense to me, and as an administrator charged with promoting internationalization on our campus, I can tell you that tenure requirements often work directly against an institution's sincere desire to reshape itself.
Teaching suffers, as does application.
In my own field of activity, it's very hard to persuade untenured faculty to develop international programs and activities when they know that these won't result in publications and won't count at review time. At the very time when folks have energy and ideas, we're discouraging them from innovation and risk-taking. Our current tenure arrangements do little for us in this regard, I'm afraid. Be sure to include your name and affiliation. Legitimate requests for anonymity will be honored.