Might be cool, but I closed my tab immediately. I work on an open team with quite a few women and other folks who would immediately react negatively to the sexy Emma Watson example photos. Bring on the downvotes, but even if this is an irrational negative reaction, it's a real one. If you want this to be a useful and universal library consider your example images. If you want it to be used only by people who aren't bothered by this, then plow straight ahead.
It's 2016, let's not propagate the mess that was Lenna: https://en.wikipedia.org/wiki/Lenna