In defence of boyd, his defence hasnt been too bad, and teams have gone after him early. He has also rushed up to make tackles to inspire the team.
I dont believe he belongs in the spine but i think he would be a good left centre. He can organise the left side defence, use quick hands to feed the ball to oates and take his preferred runs from dummy half. He could support/teach milf (or whoever our fullback is) with the finer aspects of playing fullback (i think milf is struggling with his positioning to field kicks) at training and provide perese, farnworth and coates more time to work on their games in ISC.