I don't think I'm underestimating his ability. I think he is a good hockey player. I just don't see how he uniquely helps us outside of the following:
He comes with other assets we would want (prospects - picks -etc) and conditionally, provides us an opportunity replace Hronek
I am not questioning his ability nor even his salary which I think is generally fair given his talent and ability. I AM questioning is how he helps us outside of playing 2nd Pair RHD duties as a three year stopgap, and realistically, declining over that period of time which maybe we do need but I feel like there are cheaper, easier solutions than this who have better long term value.
If we're going to take a 6M a year, cap save move for another team, we might as well plug the left side in this instance because that's in way worse shape than the right (Seider, Hronek, Lindstrom) - do we need a longer term solve at the 2nd pair RHD? Sure, Longer term...not a 34 year old.
On the left? Going into the season we have exactly.... Oesterle. Out of the prospects, RFAs, etc. - Staal? Wahlman? Then we have the prospects/rookies: Edvinsson, Johansson, Sebrango, etc. Which looks incredible...!....in three years.
Petry isn't a great fit - not because of of his talent or his salary. Now, if we trade Hronek for picks and pieces - neat, then Petry makes a lot more sense in that 2nd Pair, otherwise it seems like a weird place to focus when the Left Side is in shambles.