Like 3T ergonovas or FSA wing pros?

"Shoulders" as in the part, starting form the top, curves into the drop?
Well usually those "shoulders" at the top are intentionally not exactly flat as they have inner facing grooves/ channels for brake housings to be used with drop levers which actually enhance the shape for better ergonomics when wrapped up.
That can't be said however if you don't run drop levers or just 1 of them.