I think which ever team signs Peca will be happy, I think he "could" be next years Gourde or Marchessault.
I don't mind your trades value wise, but I see a team trading a lot of futures like prospects and picks for Karlsson over a lot of players on a team that has been so successful.
Maybe a trade with either one of Tuch or Theodore and package of a good prospect and a couple 1st's & 2nd or something of the like.
Don't get me wrong, like I said value wise its good but overall you don't make your team worst to get 1 year of Karlsson.

You can get a lot more for a franchise dman. One of his calibre. I'd feel bad for senators

I think that is a pretty good top 4 d.

You wont get Tuch and Shea. Infact you wont get Shea period. He's their Chabot. At best you get Glass, Brannstrom, and Tuch which would be a solid package.