You lost me with McDavid my friend

Don't be fooled though, the Kings would be by far the losers of this trade.
McDavid would be the only "improvement" the Kings would get out of this trade, and even then, he'd be eating up 12 million of their cap space, plus they'd be overpaying for a mediocre Patrick Russel, Gaetan Haas, and especially Adam Larsson, leaving them with less than a million dollars of cap space left over. Plus, losing Matt Roy and Mikey Anderson would significantly hurt their defense, and losing Alex Iafallo and Blake Lizotte would hurt their scoring depth.
The Oilers, on the other hand, would improve significantly in defense and scoring depth by obtaining those aforementioned players as well as a young goalie in Cal Petersen whom would be a solid back-up for Koskinen, and they'd be freeing up over 12 million in cap space on top of that.

The primary reason a trade like this would never happen is because the Kings would be heavily fleeced by it and therefore wouldn't agree to it.
The Oilers honestly would be just fine, if not better.

Nothing like throwing in a UFA goalie and a retired defenseman to sweeten the deal for a team to have to take on McDavid....

Don't be fooled though, the Oilers would be the losers of this trade. Also this is not interesting. it's insulting.

I don’t mean to be rude, but we’re you dropped on your head?

You didn't even refute any of my claims.
Having the best player in the league is troublesome in the modern NHL, that's not an insult, that's a fact. Too much pressure on that player for the entire team to succeed, not enough on the rest of the team, and you have to pay that player extra cap money. Look at a team like Vegas, how successful they're doing without any superstar forwards, that's what the modern NHL is like. The NHL is not the NBA where you can LeBron James your way to a championship.

The Oilers in this trade would be keeping Draisaitl to build around, and would put themselves in cap heaven to add some great depth pieces to become a juggernaut in the Pacific. It was because of Draisaitl anyways, not McDavid, that the Oilers were able to get out of the basement after being the epitome of mediocrity in the past two seasons.

Refuting your claims is beyond my effort level at this time. Nobody changes their mind on the internet regardless. You keep doing you.

You added a retired UFA to this trade so like, you're not coming from a very logical place anyway.

Didn't know Green was retired initially, and I fixed that mistake in the roster simulator - https://www.capfriendly.com/forums/thread/360515?post_id=1718795