Ottawa accepts

I do that in an instant.

I feel like the CBJ trade is fair. My only issue, for lack of a better word, is I have a hard time gauging what CBJ is trying to accomplish right now, you know? They're over the cap at the moment, but they're also over the roster limit and have a few waiver excempt player to send down to be compliant. If they don't really view themselves as a playoff team this year then I think this is a sensible trade.

Don't know much about Columbus or their players, but in a quick look that looks like a lot of capital for a guy who scored a career high 21 goals 5 years ago, is 32, and has only a single year left on his contract. Not to mention that he takes a spot from a younger guy that the Kings would be trying to incorporate when there's already not enough room on the roster. And finally, it messes with what was one of the best 2nd lines in hockey last season by pushing Moore off of Danault's wing. That's gonna be a no from me.

Also, you have absolutely zero idea on the value of Matt Roy. He's worth a 1st and a good prospect at a minimum. However, he's nearly as safe as Drew Doughty on the roster right now. If the Kings want to move a defenseman for a 2nd round pick, put in Sean Walker.

Matt Roy isn’t going anywhere, kings are set at forward

The Ottawa trade is horrible for the Kings -- utterly pointless* -- and the Columbus trade is impossible. Los Angeles needs every trade to be both cap-neutral and roster-neutral, and this one is neither. Kings have 15 forwards on the roster now and neither Pinelli nor Wagner is one of them. And we have no need to demote Trevor Moore from #2LW, even for Gustav Nyquist, when our primary need is bolstering the left side of the defense.

* The only reason you're making it is to shoehorn Nyquist's cap hit into the team.

Nyquist is an upgrade at 2LW over Moore imo. I don't follow the chemistry of Kings line combinations, so if Moore is a better fit with Danault they can be switched in the lineup. The point is increasing scoring on the wing.
The Roy trade is to keep the Kings cap compliant. He's been surpassed by Durzi and maybe even Spence by the end of the season. They're moving a player they don't need in order to help their forward depth.
You could trade Walker instead, but he has less cap and you'd need to make 1 more subtraction to make the Nyquist deal.

That seems like a lot to give up for Nyquist, who's only got one year left anyway. He fills a great mentor spot for Columbus this season, since they're realistically still a year away, and the cap isn't an issue with sending down the remaining AHL forwards currently listed as active. He probably gets traded at the deadline to get him to a contender and open up a spot for a young player, but idk if the Kings are that team.

Nyquist is one of the worst defensive forwards in the league (worse than Athanasiou). He's quick and he's an average 2nd line producer, but it's not worth the defensive hit the Kings would take with this guy on the ice.

At 50% retention, if Columbus were giving him away, I might consider it for redundancy purposes. However, I'd much rather have Trevor Moore (who was the Kings single best player in the 2nd half last season) at 2LW.

Roy hasn't been surpassed by Durzi in any way, though. And certainly not by Spence. They are completely different players. Roy was the #1RD last season with Doughty out. Sure, Durzi spent more time on PP, but that's because Roy isn't an offensive defenseman. In closeout scenarios, Roy and Anderson were the first off the bench, followed by Edler.

The strategy is not merely harmful, it's based upon a false premise, which is that Nyquist is an improvement on Moore. That view is dubious as to offense, and ridiculous as to defense. Moore is an excellent two-way player and tied for the league lead in shorthanded goals last season, which only happens when you spend a lot of time on the penalty kill. No one has ever accused Nyquist of having any defensive ability at all.

Merely measuring Nyquist vs Moore (and adding him, which would require returning TWO young forwards to Ontario instead of one) makes this plan bad. However, since it requires discarding Matt Roy, the plan becomes downright terrible. Los Angeles is cap compliant now. Adding Nyquist and thereby becoming non-compliant is both myopic and absurd. It would be like your team adding 24-goal-scorer James van Riemsdyk for one year and then having to trade away Neal Pionk as a cap casualty.

I see what you're saying. Nyquist has better production than Moore, but I didn't realize that he's bad defensively. As for Roy, I guess he's an underrated defensive Dman, because Kings fans seem to value him pretty highly but I haven't heard much about him from other sources.
Say the Kings did get Nyquist at the deadline, because I think they need another forward (if they can make the cap work), in order to go further in the playoffs. Would you still be opposed if Walker was traded to make room instead of Roy? Would getting a 50-pt scorer in Nyquist at 50% retained still be a worthwhile add? If he's really that bad defensively you can play him on the 3rd line instead and he could add some scoring. I would also suggest that if he's subpar, maybe putting him with an elite 2-way player in Danault would be a good idea.
Or does Nyquist just not work at all and you would rather add someone else or not add at all?