Edited Apr. 22, 2021 at 11:36 a.m.
Based on your mock draft team order, I don't see Beniers dropping to New Jersey at #6. Buffalo, Anaheim, and Ottawa (who you missed in the mock draft) are likely to select forwards, and Guenther and Beniers are the top 2 available. I don't see either of them falling out of the top 5, you're better off looking at William Eklund, Kent Johnson, or Chaz Lucius as scoring options on the wing if you're outside the top 5. Or they should likely look at a defenceman there and take either Luke Hughes or SImon Edvidsson. New Jersey already has their 1-2 punch down the middle anyways with Hischier and Hughes, they don't really need to add a centre like Beniers.
I also don't see Seattle just taking Andreas Johnsson for free. He really hasn't down much and hasn't proved he's anything without an elite centre carrying him. If you're looking to move on from him just because of his contract, you'll have to entice Seattle with a deal to do so. Otherwise they'll likely select Nathan Bastian or Nick Merkley since they're younger and cheaper.
I don't see Hamilton wanting to sign in New Jersey, although the contract offer would be intriguing if he's after money. He doesn't really fit what New Jersey needs either, they already have 2 puck moving defenceman on the right side in Severson and Subban, they need a heavier shutdown guy there. They're also not really close to contending and UFA's of Hamilton's calibre usually want to go to a contender to try to win sooner.
I like the effort and work put into this here, just seems to be a bit more on the "hopeful" side than the reality one.