Hell of a curated collection. At least roughly chronological, solid to high quality throughout (with some notable exceptions made to legacy pics, which I approve and appreciate), and volume for days.
I remember when discoverable Cortana pics still hadn't broken triple digits. Always seemed like it took way too long to do so given the source material, and even now there are way fewer pages of her on any site than I feel is her due. That does mean, however, that it is feasible to bring just about every pic worth a damn together in one place, and if that was your goal then I'd say you came damn close.