I still think Dvo ends up a Ranger and Kessel and Devil

The Devils clearly want to make the playoffs this year.. Their top 6 as of now is
Janne Kuokkanen-Jack Hughes-Yegor Sharangovich
Tatar-Nico Hischier-Jesper Bratt.

Which is bottom third in the league.. barring one of Hughes or Hischier making a huge jump.

As of right now, the only right-handed forward on the Devils’ NHL roster is McLeod. Holtz and Mercer are right handed but they're both probably a year away and with the Devils big push a veteran like Kessel makes more sense. Kessel gives them a desperately needed right shot, and he can play anywhere in the top 9 with any of Hughes, Hiscier or Zacha.

They can afford his full caphit but I've retained to give NJD more flexibility later in season.

Boqvist gets a fresh start and a chance at more ice time , Yotes take a flier and get another draft pick.

I think Pettersson is good. Is he overpaid for what he is, yes sure, but he's a reliable low event defenseman who holds up well on both ends of the ice and might have some more offense to him. For whatever Pens management is out on him. He's 25 which makes him a little older than the Yotes rebuild age curve but being 27/28 when the team is ready to be good isn't too old.

Already owning 5 2nd rounders, you can afford to lose a 3rd (which the Pens don't have) and some later draft capital.