Top 30 yes a massive turnover needed. But from the 1-17 I think you had 4? as non negotiable duds....apologies if I got that wrong.
I'm not saying the roster is top class or anything like Top 4 as is. Just that when its individually evaluated, the team only needs 4-7 new players.
Wholesale slashing of the team not required.
The shortfall is the coaching, the fitness, confidence, selections, favourites. Pay isn't getting the players performing to their best ability. JJ a classic example for at least 3 quarters of the season.