I'm happy to trust Kevvie to pick whoever he thinks has earned every position. We haven't seen them at training. We don't know what markers they've been given and whether they've met them.
As far as Oates and Arthars go, I think some goodwill applies. Corey was BHQ Player's of the Year in 2022 by quite a margin. But only played 9 games last season, through unfortunate injuries. We've only seen one half of trials since then. Arthars finished the season on a high as his replacement, being one of our best in the Grand Final. But he has not trained during the preseason, due to injury, and was one of the worst on field in the All Stars match. Meanwhile, Mariner has trained the full preseason on on the wing, and has seen ample trial time, but has been a real mixed bag. It's fair to say even his biggest fans have dialled back their enthusiasm to get him in ASAP.
Whichever two of those three Kevvie picks I'm sure will do the job, but based on residual goodwill alone I could understand him going with Oates and Arthars. A similiar discussion is being had about our four hookers, with opinions differing markedly between observers, and even a little heat. The upshot is the 9/14 selection should be Billy and Tyson, no question, for no other reason than that was the combo that got us to the Grand Final. And they looked like they belonged there.
But every player needs to be looking over his shoulder, not just our wingers and hookers. That's competitive sport.