I think that Stern will be wasted in that role - he remains our best CF imo.
This thread highlights one thing though, the flexibility of our system.
For example, Lallana could adopt a role on either wing or in the hole. BWP down either wing or CF. Dyer down either wing. Surman could play in the hole as could Euell or even Skacel.
I could go on. The point is that during the season -and even during games I reckon - we will see a lot of players in a lot of roles.
Should be fun!