Recruitment officers/depts are herd animals. They all graze in the same places, looking for "that person who did the same job at our competitor" or "that person who did the same degree at the same place as the current dept. manager."
We need to put limits on this kind of thinking. Allow some "herd" hires (some work out well) but once you hit the cap, you have to go recruit someone with a different background. Only this will produce the diversity of thought that brings flexibility to HR and the wider corporation.