We should forget about both Stamkos and Shattenkirk.
Hedman is due to be a UFA next year. If he becomes a UFA, he's the guy you target. A much more complete player than Shattenkirk, and younger to boot.
Shattenkirk and Hedman shouldn't even be mentioned in the same sentence.
No way Tampa lets him get away. He's in for a hell of a pay day.