Id see how a lot of these players perform under a better coach. I'm not convinced a player like a croft doesn't have more to offer than what we are seeing right now. He definitely is sub-par at the moment but he might work better under a new coach. I also think a lot of others might too. There are always players that get lost with a new coach imposing his style. Obviously that's not croft, but I think the likes of isaako and oates can be better. Croft nether the less looks like the type of player that would benefit with some clearer direction. You can't say he doesn't try, it's just he is no inept at almost every facet of his game right now (like a lot of others, he has had any self-confidence shredded).
Whatever is wrong with the playing group will probably need some wholesale changes anyway so I wouldn't be doing it piecemeal before a new coach takes over. If as they say the roster is split down the middle with infighting, there will definitely be a clear out.