well the players that have been present for the last 6-7 years are still there (to some degree). management was always an issue for the flyers. they could never get consistency scoring-wise and great goaltending. the jury is still out on C. Hart:
it’s been back to its old self
Both of these statements are more-or-less wrong. For one, their team GAA was actually league average or a hair lower over the last 5 years until this most recent season, where everyone got hurt and they set a record for goalies used. That was an injury issue, no team is going to withstand the top 3 goalies on its depth chart going down long-term.
And there are only 3 players who are still on the team from 2015. Only 8 players who were on the team in 2016-17. Two of them are fourth-liners (Raffl, Laughton). The other six are Giroux, Couturier, Voracek, Konecny, Provorov, and Gostisbehere.
The problems were coaching and depth. The guys listed above are pretty much gonna score and do their thing no matter what, that's some pretty solid top-end talent. Hextall surrounded them with bargain-bin crap. The bottom six and half the defense were a nightmare. Over the last two years--and over the last 8 months, especially--they've torn out all the garbage and replaced it with actual NHL depth.
OUT:
Simmonds, Filppula, Lehtera, Weise, MacDonald, Manning, Weal, Gudas, Neuvirth (Hakstol)
IN:
JVR, Hayes, Patrick, Lindblom, Niskanen, Sanheim, Braun, Myers, Hart (Vigneault)
None of those were big, splashy moves, and the splashiest one was also the most questionable (Hayes). But that's a really drastic increase in overall roster quality, paired with the hiring of a very good coach. There's questions marks, but probably less than there are for many teams in the Metro. I think some folks are underestimating how dramatically different and improved that team is, though.