The problem remains a lack of consolidation of top talent - and hanging on to certain upperclassmen ensures that the development of UNH's better recruits is spread far too thin. Most of the upperclass names you mention are fine players, but they're not top-line or top-pair talent and the depth behind them is either not up to par or not quite ready for par...
By the time Evans, Turner or potentially Rickwood would be ready to contribute in a top-six role, Ward, Pierson and Blaisdell will be gone. It's a continuation of the cycle UNH has been stuck in for years - some talent, not enough....
Let's dream of a world in which Rickwood picks UNH. Joining Sardarian. Suddenly, you have 22-23 with a strong top 6 (depending on Pierson or Engaras staying a fifth year), and a very competitive 23-24 year.
2021-22
Sr.Ward---------------Sr.Pierson-----------Grad.MacAdams
Jr.Blaisdell------------Sr.Engaras----------So.Cafarelli
Jr.Stevenson---------So.Gendron----------Fr.Cronin
Fr.Margel-----------Jr.Herrmann---------Fr.Evans
So.Richels------------Sr.Cipollone---------Sr.Esposito
Fr.J.Ring--------------Fr.Sweeney---------Jr.Hankinson
Jr.Eriksson--------Fr.Gagne
Sr.MacKinnon-----So.Reid
Sr.Verrier---------So.Jenson
Fr.Huard----------Sr.Semandel
Sr.Hickey
Grad.Robinson-----Jr.Fessenden----So.Forman
2022-23
Grad.Ward-------------[[[[Grad.Pierson or Engaras]]]]------So.Evans
Sr.Blaisdell----------Fr.Sardaryan--------Fr.Rickwood
Sr.Stevenson-------Jr.Gendron-----------Jr.Cafarelli/So.Cronin
So.Margel-----------Sr.Herrmann---------Fr.Turner
Jr.Richels-----------Fr.Leclerc-------------Fr.Devlin/Fr.D.Sacco
Fr.Winters----------So.Sweeney----------Sr.Hankinson
So.J.Ring-----------
Sr.Eriksson-------So.Gagne
Jr..Reid-----------Fr.Ardanaz
Fr.Carfagna------Jr.Jenson
So.Huard---------Fr.Penney
Fr.Baliotti-----------Sr.Fessenden---------Jr.Forman
2023-24
Grad.Blaisdell-------So.Sardaryan-------Jr.Evans
Grad.Stevenson-------Sr.Cafarelli----------So.Rickwood
Jr.Margel------------Sr.Gendron-----------Jr.Cronin
Sr.Richels-----------So.Turner------------So.D.Sacco
So.Winters---------So.Leclerc-------------So.Devlin
Jr.J.Ring-----------Jr.Sweeney-------------Fr.N.Ring
Sr.Reid-----------Jr.Gagne
So.Ardanaz-------Fr.Fitzgerald
So.Carfagna------Sr.Jenson
Jr.Huard---------So.Penney
So.Baliotti-----------Fr.Muszelik---------Jr.Forman
Still an awful lot of dreaming, but the path seems clearer if you get a couple of BCHL all-rookie teamers Evans/Ardanaz followed by BCHL rookie of the year/MVP Rickwood.