Seriously now, naming an airport after Fred Rogers doesn't quite fit the picture picture. Airports tend NOT to get along with their neighbors. Noise abatement and expansion issues and such. Although people who buy houses near an airport and then complain about the noise indisputably live in a neighborhood of make-believe.
Let's see, hmmm. Pittsburgh.
Andrew Carnegie already has too many things named after him.
Anything Heinz sounds too much like advertising.
Mario Lemieux and ClueByFour aren't dead yet.
Wait, I got it. Art Rooney.
Or Roberto Clemente. That one's a bit PC, even.