The only time I've ever seen LA Kings fans even consider moving Danault is if there's another top 9 center coming back the other way in the trade. I guess Dach, or even more likely Newhook would have to be involved.
I'm not so sure Horvat and Barzal will both be traded. Probably one or maybe none, and I think Barzal is the one more likely to be moved. If I was in charge they would both be traded, but hey, I'm not in charge. Tear the whole Islanders team down. Keep Holmstrom and MacLean. Pelech, and Engvall have negative value so keep them also. Maybe keep Tsyplakov and/or Sorokin for one or two years.
I think a big swing Montreal could attempt would be to send Laine, Dach, Matheson and pick(s)/prospect(s) for Horvat and Pulock. Not sure a deal could be made, but worth exploring.