I think the search for identity also needs to answer why every player traded since 2018 - without exception - has become significantly more successful on their new team. Tells me its not the talent...its the culture.
I wouldn't say that. Here's some that certainly weren't more successful, let alone significantly.
2020:
Forbort was poor in Calgary, just blech there. Worse than with LA.
2019:
Oscar Fantenberg sucked in Calgary, he did nothing there. Wasn't great here but found a way to get worse.
Muzzin has been worse in Toronto, he's nothing close to the force he was here.
Clifford was not good in Toronto, they had better options than to re-sign him. Nowhere near as good as he was in LA.
2018
Andreoff didn't even play an NHL game in TB, they sent him straight down.
Marian Gaborik was worse in Ottawa. Kind of hard to have more success when you aren't even in the league. Yeah, he had a fork in him already, but still.
Nick Shore became even more tan after trading him, Ottawa loved him so much they traded him for a 7th a couple weeks later.
Pearson wasn't good with Pittsburgh. They kept him for 3 months and then traded him.
So maybe a few exceptions. Certainly a poor premise to base any conclusions on.
Players that have done significantly better:
Jeff Carter
Alec Martinez
Tyler Toffoli
The rest were either minor deals, weren't here long enough to determine or were a wash. Maybe you could argue Campbell, but he had his best Sv% year on a bad Kings team. He's been pretty good this year, but he's on a much better team so there is that.