I'd like to see what they could do with Horvat and Pettersson drawing the tougher matchups.
Anyway, I think the Sedins would be very capable of playing a defensive 3rd line style game. They couldn't play the big minutes or skate in their last bit in the NHL but they were smart and were able to work along the boards. Their weak defensive play was a result of them trying to play a more offensive game rather than trying to keep the puck out of the net and chipping in here and there, but they just weren't good enough anymore to produce at the rate necessary to make up for weak defensive play.
I think the Sedins would be an excellent 3rd line that could be either very effective defensively when specifically put in that role, or could put up points against teams that put their top guys head to head against Pettersson and Horvat giving the Sedins easy matchups. Combined with having two solid PP units I think they could still be effective players in the NHL, assuming they were willing to take on that type of role and I think they would if it was on a competitive team.
Anyway replacing some of our trash players with the Sedins might be enough to get us in the playoffs with how bad the west is, but as I'm advocating them in a somewhat specialist role geared towards defensive play I don't think they would make us a respectable team. Removing Sutter, Schaller and Beagle and replacing their 9.275m salary with Gaunce at 750k + Sedins at 4 each would be a significant upgrade. Sutter could have been moved easily IMO and Beagle/Schaller should never have been signed so this isn't exactly a wild fantasy.
Baertschi - Horvat - Boeser
Leivo - Pettersson - Goldobin
Sedin - Sedin - Eriksson
Roussel - Gaudette - Virtanen
Gaunce
Move Gaunce in when Baertschi is injured, Motte in while Gaudette was in AHL / in the press box while Baertschi is out and Gaunce is in. Do whatever with Gagner/Granlund, Motte can be the up/down waivers guy
Edler - Tanev
Hutton - Stecher
MDZ - Gudbranson
Pouliot/Biega
Ideally dump both MDZ/Gudbranson as we did. I like Schenn so far and I wonder if we could have got something else for Gudbranson.
Certainly nothing special, but to me the question is "does replacing Sutter and Beagle with Henrik/Daniel make this a playoff team" and the answer is "eh maybe I guess but it makes us better".