Obviously the coaches recognise a potential hole in defence if things don't pan out ,they would've done their DD , and it's likely we went for Joyce because he was the best of whoever was available.I'd say Joyce is more like for like than Greene, but Greene projects to be a Gardiner type player, taking the third tall. He has shown great signs in the role and if we were confident in Dizzy to play on the second tall it could have worked. Still, you'd assume Joyce has shown enough to prove a better prospect than Dizzy on the second tall.
We've certainly got enough defenders who can play at AFL level . Maybe we rejig the structure if there aren't enough talls , or just go with a Joyce and get him to focus solely on defence and leave it up to the others to mop up.
Greene has shown promise for sure and is getting to the age where he should start to improve.