Charlie's article in the athletic today discusses what he would do with the RFA's. He said he'd go long-term on both York and Cates. Said he still needs to see more from Frost to give him a long term deal. I suspect that's what the Flyers would like to do as well. He thinks he won't score enough to be more than a 3C. I think anyone who sees it like that is purposefully looking at it that way.
Frost scored 36 points at 5v5 this year, totaling about 2.02 points per 60 minutes at 5v5. That ranks him tied for 99th (347 total forwards), putting him in the top 30% of forwards in total points per 60. Going solely on ranking position, which I don't like to do because it's somewhat arbitrary, he's already scoring at near top line levels (32*3=96 forwards). I've said this before, he was not given the best offensive wingers at 5v5.
However, when he's played with TK, their xGF/60 is 3.27 and xGF% is 53.05, but without TK the numbers are 2.26 and 47.10%. TK's xGF/60 and xGF% without Frost is 2.56 and his xGF% is 45.46%. It is mutually beneficial for those two to play together, and it took like 75 games for that to actually happen somewhat consistently. Lets pretend Frost was given Cates' deployment where he was given 400 minutes with TK. Frost is going to score anywhere from 2-5 more points during that time. That takes him from 36 to 38-41 points over the season at 5v5. This isn't Frost getting better, it's just using him with other offensive talent.
Further, he had 5 PP points (1G, 4A), while being used in the bumper and even net front at times. This is a woefully awful way to use the forward with the best vision on the team. This coaching staff has been suppressing Frost with suboptimal deployment all year. If they used him correctly this year, and actually played him with other elite talent, I gotta believe he scores 3-7 more power play points. Again, That's just using him correctly, no additional development, not getting better, just being used properly...And by the way, Remember when Charlie made up some bullshit about Giroux's PP scoring, saying it wasn't usage, but that Giroux's skill was decreasing...Guess what, this year Giroux PP points/60 increased back to his average around 16-17 and 17-18.
You add those extra 5 to 12 more points this year, and Frost ends up with 51-58 points this season....We saw him finish the last 60 games on a 60 point pace. There's no reason to believe that's not possible, if given better usage. The only way he doesn't produce next season is if he's not given the opportunity to do so. His entire history proves he's a very good, offensive producer, and to bet against that, particularly after the season he had given those variables above, is crazy.
To me, if I had to choose one player between Frost, Cates, and York to go long term, it's Frost, and it's not particularly close in my mind.