Very interesting scenario. Funny enough, I think both teams would say 'yes' and walk away happy.
Seattle are bound to land a couple of "big names" left exposed in the expansion draft. That, and all the fanfare of an expansion franchise in a strong sports market will probably be enough to offset not getting a "marquee" young talent from this draft. And if they play their cards right, getting three very good/good NHLers from the first round that are ready to come in 1-2 years from now would set them up so nicely. It's not the flashy move, but it's probably the smart one long term.
On the flipside, if CBJ can land a marquee young name from the draft by moving up, that would help give the fanbase a great hope to look forward to, turn the page from the PLD trade, and potentially help distract from any negativity around a potential Laine trade. Which feels like its coming, eventually. In short, they take their chances on landing a future star vs 2-3 very good young players, which their core seems to have plenty of already.