One that shows you really don't need their program in the first place. Demonstrated experience, good publications, etc. No offense, but I've never met a good administrator who actually went to school for it. The best ones come from backgrounds in engineering, science or math, IMO. I think its b/c those critica; thinking skills are more hard-wired in those folks. Administrivia comes relatively easy (if distastefully) to the mindset.
If you want more details than this, suggest you PM Cam.
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh