YES WE MORE OR LESS AGREE: Harvey Fierstein to play Edna Turnblad, Jennifer Hudson as Motormouth Maybelle in NBC's live Hairspray this December.
Look: Fierstein's Edna is a national treasure, and since not everyone got to see it on Broadway (ok: twice for me), yes, absolutely, sure. Right dramaturgical choice, and there are plenty of stars to bring in for the ratings (Velma, Corky, etc). Ms. Hudson absolutely being qualified to be one of them, though ... she's a little young for the role.
As long as they cast an actual plus-sized actress as Tracy, we should be fine.