I was thinking about this in a different, more abstract way earlier.....(boring meeting from 11-12:30 just after I saw that PB retired - so my mind wandered).
Imagine you know nothing about sports and somebody told you that every year teams will play 82 games but only 1/2 of those teams get the chance to play another 16-28.
But....the team that is the best for the last 16-28 games is the one that is celebrated and nobody cares who the best team was for the first 82 games.
I get it when people have the attitude that "only championships matter".
But, considering that just about every single fan has seen them play far more RS games than playoff games, and this team has won more RS games than any other team over the past 20 years -- it's very, very hard to say that this core wasn't successful.
Yes, 2019 was a huge disappointment, as was this spring --- but there are also, what 20+ teams who didn't play in a finals during that time period.
Al in all, this core/team since 2003 gets an A from me.