I agree with the majority of your post but 2021 recruitment still needs to be the focus.
Hooker (need to get someone on contract, imo)
Cameron McInnes
Sam Verrills
Prop
Spencer Leniu
Thomas Flegler
Emre Guler
Centre
Stephen Crichton
Kotoni Staggs
Wing
Xavier Coates
Matt Burton obviously, ideally for 2021.
Sitili Tupouniua's a great player but we're stacked in the second row.
We also have Jackson Topine, Bailey Biondi-Odo, Aaron Schoupp and Devontai Seumanutafa coming through. I think all of them except BBO definitely should be in our plans for 2022 and beyond (when looking at our roster).
I wouldn't 100% release Hopoate and Reimis (dependant on next year, maybe cut throat with Hopoate due to the two centres above available, similar to Panthers and Mansour). The others I have no problem with getting rid.
I wouldn't be extending Thompson, he was disappointing this year (possibly has his reasons) and he'll need a big year next year.