Lol, no.

0% chance of this happening

Ignoring the value for both sides of this trade, a GM that wants to keep his job and be able to walk around NY needs to keep that pick. It's for their own personal safety.

Not a chance

Check out this rough estimator of draft pick values in the NFL. Its not the NHL, but it helps to emphasize how quickly pick values decrease. Thats why when people say "first round pick" as some uniform thing its silly.

http://walterfootball.com/draftchart.php

So a 9th over all is 1350. 21st (guess for the pick) is 800. Thats 2150. A first is 3000. Ritchie is not worth another 21st pick.

The second pick would be 2600 not 3000, so Ritchie would be valued at a mid to late second rounder. based on that estimate. And the 2nd pick will be in the ball park of 18-20 when stl and SJ get eliminated in the first round.

wowowowow this is awful

Kinda hard to compare 2 completely different leagues. In the NFL most first round picks are expected to step into the league right away. Not so much in the NHL where they could still be 2-3 years away. Not really the best tool to compare draft picks with. It also depends on how deep the drafts are or if they're too heavy. A lot goes into trades like this, not just "oh this pick is this number so it's worth this amount of points"
That chart looks like it coulda been made by anyone. Not sure how credible it is. Unless I missed something.

There are other sources for it, and for sure everything you said is true.

I mostly am just trying to point out the trend (which is true in all leagues) that the decline in pick value is quite large early and then flattens as well as how much more valuable a 1st or second overall is to a mid first.

You can also use Cullen's numbers to see similar for NHL, but I can't seem to get it to load.

The truth is that the difference between say the 2nd and 8th pick, is larger than the 25th and 33rd. As well the higher you get in the draft the more you have to pay to move up.

This is for the NHL based on trades that GM made on draft day. I have found it to be true or reasonably close:
https://www.broadstreethockey.com/2013/4/25/4262594/nhl-draft-pick-value-trading-up

to get the 2nd over all, one would need to offer 25th, 26th, 27th, 28th and a little more.
Or to this post 9th OA (ANA), 20th OA (STL), and 39 OA (ANA), of course the Rangers would have to agree.

If that trade was made, the Rangers would have 9th, 20th, 22nd, maybe 31st, 37th, 39th and 49th, with all of those picks they just may make the trade.

Cool thanks!