I've been keen to see him play that role and was pleased he showed a bit last week. Agree that both those young guys have potentially more to offer long term, but Talia has to be a defender with his kicking skills and I wouldn't want to see Roberts playing in the ruck at this point in his career. Markovic is the expendable type we can throw into that role for now and Roberts should only come in if his form either warrants selection and we adjust around him or Williams is fit and we get him to do some stints in the ruck while playing forward.