As an outsider looking in, your club has persisted with Luke Brooks in the first grade side for way too long. He turns 28 in December 2022 and next season will be his tenth season in first grade. In all that time, has he shown consistent growth? Nope. Has he been consistently good? Sometimes, but rarely for a whole season, let alone in successive seasons.
If he'd been a player at somewhere like the Storm, Roosters, Bulldogs, and not shown much development, would anyone seriously think any of those clubs would have persisted with him, or would they have moved him on? Sometime you have to look beyond potential and judge as to whether he is doing the job you want and will the player will continue to do so. I think your powers that be are unwilling to face reality and realise they over paid for a player who, whilst good, is not quite the top flight halfback that your club needs. You only need to look at my club when they realised it about Mitchell Pearce when they went out and signed Cooper Cronk.
By persisting with Brooks, you have had a number of promising young halves leave who, in the longer term, may have been a better fit for the side that Brooks.
As to halfbacks having pace, Peter Sterling was a rather slow runner. However he was a brilliant game manager, had a fantastic passing game, and a great long and short kicking game. With guys like Kenny, Ella, Cronin, Grothe outside him, he just needed to get them the ball when they could do something with it - he didn't need to do it all himself. Whilst Hastings may not be fast, he has better game management skill, in my opinion, than Brooks. He just needs a good ball runner at five eight to complement him. I think too many in your club's hierarchy are over doing it on the "Back to the Future" vibe that Sheens' appointment is giving off.