The basic impression I get from Seibold is that he values his senior players, so guys like Darius Boyd and Andrew McCullough will be shown more leeway than fans will like. I don't think that same patience extends to the halves and while he'll give Kodi a month, if the Broncos are still struggling, he'll bring in Sean O'Sullivan. In fact, it wouldn't surprise me if in Round 5 we see Seibold select O'Sullivan off the bench if the side is struggling. New coaches are typically less stubborn with their side and usually like to experiment with the 17. Even Wayne was like that in 2015 and wasn't afraid to rotate his bench just to get a feel for the squad in game day situations.
At best I see O'Sullivan as a solid alternative, but I don't think he's the type of half the fans want. The closest thing the Broncos have to that vision right now is Tanah Boyd and he's still acclimitising to the Queensland Cup and won't be available until the Sharks game in Round 16. Brisbane could of course upgrade him, but I don't see that happening and believe that Turpin and Dearden will be the players to come in the Broncos Top 30.