I've never really accepted "moving Sione around" with no further elaboration as an explanation for why Sione didn't reach the heights many expected. First of all I don't think he was *that* good of a player to where if he was just left in one spot he would have been the superstar some seem to think we destroyed. Secondly I think there's a difference between a guy being a utility with a specific range of positions vs the Sione example of having a guy change his body composition multiple times to switch between positions as different as fullback/wing and lock forward. If anything messed him up it's that, not just "not letting him settle in a position". I would argue he absolutely did eventually settle in a spot (back row).
There are plenty of examples of players being moved around a bit where it hasn't done any harm at all. Nick Meaney has an NRL start in every backline position besides halfback and these days excels in his particular niche as a very reliable right centre + good back up fullback. Dylan Lucas has switched between centre and second row when needed, with no issue. Tyran Wishart is a Kurt Gidley style pure spine utility - anywhere 1, 6, 7 or 9, but has never been tried as a centre or winger, I guess Melbourne think he'd suck there - and has performed well in each spot. Etc.
Peter Parr on SEN the other week said they saw Sharpe as a guy who can play anywhere in the backline and I agree with that, you can plug him in anywhere 7-1 and by the looks of him there's no need to change his body composition to get him in there. It's just as a half I see a guy who can make *some* positive impact in games due to how bloody talented & instinctive he is, but playing him there you lose out on certain good attributes of a genuine specialist half which can take a long time to develop. As someone in the back 5 you still get the good stuff IMO and I'm not sure we'd lose that much playing him one pass wider.
On the flip side, if Brown actually can develop into a good on-ball 7, and we can get Sharpe to understand and execute on the kind of role Tyson Gamble had in 2023 - but, obviously, with a much, much more dangerous and dynamic player in that role - there's no denying that yes that's a very tantalising prospect. He may come back with a new level of ball playing skill and finesse and make me look a muppet for ever doubting it. And I hope that does happen.