A few issues with that side.
Creagh over Watmough is an absolute travesty. Creagh is bloody average IMO, never impressed at Origin level. Watmough has been a stand out in recent performances, and was selected for the ANZAC Test side too.
I don't have an issue with Merrin being picked over Tariq Sims as he is a genuine prop (more on this in the next point), but surely there are other better props going around than him. Tim Mannah, Tim Grant, Aaron Woods, Keith Galloway, Bryce Gibbs, Kade Snowden, Luke Douglas, Aiden Tolman, Michael Weyman, Tom Learoyd-Lahrs?
As for the aforementioned Tariq Sims, he was competing with T-Rex for that bench spot. Although Williams is a devastating player, he has little form due to suspension, while Sims to me is the second coming of Gordon Tallis. Surprised that he didn't warrant selection.
Finally - Hinchcliffe IMO is a superior utility to Buhrer. I don't think Buhrer is bad, don't get me wrong, but surely more proven performers like Hinchy, Aubusson, Graham, Mateo, etc would have warranted selection with a little bit more conviction.