This is very negative look at it. Our spine will struggle to match what they produced last year? Based on what exactly? I see them improving.
Replacing Tetevano means finding a decent bench prop, that is not hard to do. Tamou is the only loss and Leniu may have surpassed him already.
Our spine was damn near perfect in 2020. A standard that is hard to maintain let alone improve on. Put them behind a slightly inferior front row with a target on them and I think it's very difficult to maintain and improve upon 2020 form. Not impossible. But it's an extremely unrealistic expectation to think they can improve and maintain that form throughout the 2021 campaign and into the finals. If they even match it they have done incredibly well.
Tetevano and Tamou would without doubt be in our top 17 if still here. Leota would be the expendable one to fit Leniu in... Who was already part of our top 17 most weeks.
What luck did we have last year?
As answered already. Injuries. Especially in the spine. Edwards being the only one to miss much game time and it was mainly at the start of the season.. the covid break even reduced how many games he would miss.
Compared to a usual season of injuries for our club that was basically winning the lotto for us. We also rarely faced having injuries mount in a position at the same time to end up with our 8th choice winger, 5th choice half etc. Although really our luck was more just not having our usual bad luck. We werent completely unaffected. We just weren't cursed like normal.