Quoting: littlejerryseinfeld
I know when I am measuring the player, I look at hits.
Eichel is 54th in points. If all the teams are equal, he should be a team's 2nd best player. He's two years younger and may have a higher ceiling?
Ristolainen is 28th in points by defensemen. He should be some team's best offensive defenseman. And at 23 he is. If you set it to just centers, Eichel is 28th in points among centers. Since teams play two defensemen at once and the leaderboard doesn't differentiate, I'd say Ristolainen is doing twice as well, offensively, relative to his position. Like, if the teams aren't evenly distributed, and they're not, because some teams build for right away while others build for the future, he could play first pairing on a playoff team. Since hits, minutes, and zone starts are three ways of looking at defense, it's worth noting that those are more areas where Ristolainen is more valuable.
Eichel has a very high ceiling, but he's the 28th best center in the league offensively, starts 3/5 shifts in ahead of the red line, and is outscored by 25 goals at even strength this year. Whether or not he's your most valuable trade chip, or brightest future star, Ristolainen, O'Reilly, and maybe even Scandella and Lehner played better hockey this year. Throwing away three of your top five guys in an ACGM to bring back two defensemen who are less tough and score slightly more points playing on much better teams?
Anyway... if the Caps lose Carlson, they'd be interested in Ristolainen. They'd already be interested in O'reillly if they could dump Orpik's cap hit to fit his. They're probably offering picks, prospects, and wingers. Maybe a goalie, but Buffalo fans pretty emphatically don't want those.
Buffalo fans seem divided evenly between those who want to blow it up to win bigger in three or four years and those who want to judiciously add cheap veterans and try to make the playoffs faster. You seem to be on both sides, here. Maybe try picking one. I don't think that O'Reilly and Ristolainen for Hamilton and Letang is necessarily an improvement. Keep Ristolainen. He's way younger and if he were playing with Crosby, he'd have 60 points next year. Letang doesn't. Bring in cheap veterans to mentor him and get him to not be -25. Orpik is yours for free if you want him.