I don't really think that it is in the cards, but cannot help wonder about Chychrun.
For me, unless there was a home run upgrade in goal (and Jarry is playing as one of the better goalies in the league now, with all the usual caveats about his playoff nous), I think the biggest boost to our competitiveness would still come from a D-upgrade. You can say that we are vulnerable to a top6 injury, and that is true, but it is also hard and expensive to upgrade there, and there'd quickly be diminishing returns as we have no PP places to offer for forwards, and
Dumo is a big part of the PK, of course, but he has also been really dodgy in many games, and I really don't think he is someone we should re-sign.
So, if you can get someone for the top 4 who helps a lot ES and can bring some speed and offensive punch instead, who has a pretty sweet contract at 4.6 for the next two seasons after this.... to fully match our window, how far would you go? Some contender is going to this season, I'm sure. Not least with Chychrun having looked so good since returning from injury. 9 points in 11 and +5 on a pretty terrible Yotes team.
So, Dumo would have to go and at 4.1 if this was a deadline deal it would be OK cap-wise. Dumo is someone Arizona can easily flip for at least a 2nd with his pedigree. Then add Ty Smith, who would not have much of a purpose for us in any near future if we grabbed Chychrun, but should be a long term replacement for a rebuilding Yotes team. Then add our 1st rounder. Then add one of the young forwards from WBS. Say Poulin. That's basically three recent 1st round pick assets who can all play in the NHL now, plus a 2nd. Or Kappy could be involved if they fancied.
Would you, would we, would they? One imagines they'd like a more elite piece back, but they'll just have to draft one themselves. We don't have any young such to give.