Linnet is a donkey. He'd end up in the backrow the same as Delaney. Coote's a class act, but he'd want to start full back. Feldt might be good, but I wouldn't break the bank for him and really wouldn't want to use a quota space on a winger if at all possible.
I don't see how you could possibly call for Sutcliffe as a starting second row for next year. He's one of the players we should be looking to Dual Reg or even move on entirely. If he backs himself to make it as a second row then he needs to show what he can do in the Championship/on loan first and earn his stripes for the first time in his career rather than getting a position because there's nobody else better.
Like others I wouldn't be convinced with him at centre either, but if its a dogfight between him, Handley, Newman and maybe Luke Briscoe for 4 and 5 then it could work if its made plain that they all start with a blank slate and its up to them to win their place.