You're buying a player to fix one problem that creates another. Hunt may or may not make a great 5/8, he has been trialled there unsuccessfully in the past. Hornby has evolved into a capable halfback and we have a halves combination that is actually pretty dangerous these days. Soward has shown he is preferred as a 5/8, he doesn't like directing around the forwards, it's not in his game. He's a better instinctive player at 5/8 with a bit more space. So buying Hunt forces Soward to halfback, and you've got 2 blokes in the halves who don't like directing around the side.
Hornby is also not proven at hooker, he does at times look impressive when he slots in there, but how he goes over an extended period is an unknown.
Honestly, Hunt really doesn't have much to offer our side at present, without shifting key personell who are actually doing a damn fine job themselves, and he'd be on double the salary of any of them. Hunt was a good proposition when our halves didn't look settled, but it simply is not the case anymore.
Suppose Hunt doesn't work out at 5/8, what is your contingency plan? What do you do with him? Move Boyd to the centers and Hunt to fullback? Congratulations, we are now the Roosters overspending on players we don't need.