The props we should have are Scruton, Nas, McAvoy, Fielden (hopefully) and then 1 or 2 more SL props. The back row looks solid now with the youth of Whitehead, Olbison and Bateman and the experience of Langers and Walker. We also have Donno and Addy if they stay.
Don't forget Matty Blythe who can play in the second row.
For me, we need 3 more props and Nas needs to be retained, a stand off, and a winger. It is then that we can start speculating over a top 8 finish. We need to see what our finalized squad looks like.