Hamilton is a right shot & with Karlsson playing the right side & taking the majority of the allotted ice time including most of the PP Hamilton would not get as much ice time as he may want including PP time. I think we have to keep that in mind which it is much more likely that if Ottawa does bring in a top 4 defenceman it should be a left shot who plays the left side. That being said though, Methot plays very well with Karlsson & allows Karlsson to free wheel, not every defenceman regardless of how good they are offensively can also be great defensively & protect Karlsson's back. Not every defenceman wants to play second banana to Karlsson, most great defencemen want to run their own show
Having said that, if they look to upgrade the defence, which I doubt they will try to do this off season, then I would think they would upgrade the left side of the 2nd pairing which may mean Wiercioch is out of a job. And yet he played well down the stretch in that spot & played well for Canada & won a world Championship. Cowen really seems to be the odd man out here but so does Gryba if they intend on bringing up Wideman.
Prince & Wideman are both UFAs & will probably be lost to waivers if they don't make the Ottawa roster at training camp, if & when Ottawa tries to send them back to Bingo. Therefore, it would make much more sense if they included the AHL's best defenceman last yr & Bingo's leading scorer along with Cowen in any package to acquire a top 6 forward along with a pick or two. This is why ROR or Lucic makes sense to me.