I wasn't too fond of Korto during her season either. I felt her designs were too one-note, it was always the same shape and fabric choices, even more so tha Uli who got critisised for it. She came across as somewhat negative, but like you said, ibot, it was drowned in Kenley.
ETA: If they thought Jeffrey winning was a mistake, why bring him back for a new chance at a prize? Or did they know they wouldn't let him win a second time and brought him back just for drama? (I haven't seen this so I don't know how it played out that they thought his win was a mistake)