Its amusing that so many think salary cap management is "set and forget". Every year clubs will try to put together the best roster they can, within the salary cap and based on the best information they have at a point in time. Player form and team chemistry is dynamic meaning last week's, or even yesterday's, decisions may no longer be the best strategy for the future - let alone decisions from previous seasons.
From a certain point in time, players will develop into stars (Kikau, Blake, JFH, etc) and go past other players already contracted (e.g. Peach, CHN, Merrin). Other players will have meltdowns (Bryce), personality clashes (Moylan), allegedly sleep with other players partners (TMM) or generally regress (Hiku, Latu).
When this happens, its time for the club to exhibit their salary cap management skill to recruit replacements, re-sign, negotiate releases, monitor junior development, etc.
Its also in the player's (& importantly in the negotiations, the player manager's) interests for the player not to be playing reserve grade, or extended selection on the bench (again, CHN, Peach). This reduces the player's bargaining power for future deals in the longer term. So when release negotiations start in respect of a tradeable player, there is often mutual benefit. And sometimes players will move to clubs where they have opportunity to start and consequently earn more. The club just needs to determine who is tradeable and who is off-limits.
Looking at our 1 to 13, IMO we're strong across the park. We also have sufficient depth down to player 25 (there's a few guys I've yet to see first-hand) to cover our seemingly inevitable injuries. In particular our spine coverage looks good with DWZ, Aekins, Luai, May & Katoa. McKendry may also give the club room to move.
Unlike a few on here, I think we are focused on 2019 and 2020 for a concerted premiership shot. While the squad is young, they have experience in finals and at rep level. The skill level of our depth players is improving every year. As is the case every year, the premiership will come down to which club can keep their critical players on the field for the majority of the year &/or at the right time of the year. IMO we're well placed to challenge the Top 4 and the premiership.