Maybe the Eddie plan is to have an interchangeable centre set up based upon carriers and playmakers. So using Farrell, Tuilagi, Slade and Te’o you can mix and match a playmaker or carrier for 12 or 13. Playmaker/Carrier = Farrell/Tuilagi Carrier/Carrier = Te’o/Tuilagi Carrier/Playmaker = Tuilagi/Slade Playmaker/Playmaker = Farrell/Slade But Eddie has just been delayed in trying Carrier/Carrier out, due to player injuries. I need to go back and check, but have all these combinations been tried out yet? If so, then maybe Eddie is ticking off his WC prep list to have preset options he will select from. All random speculation of course, but maybe this would also support the Eddie approach of splitting the team into units and solely focusing on changes within separate units without worrying about whole team. I.e. back five forwards instead of solely back row and second row. Or the back three as Full Backs.