There is no point in making a interim belt as it would be meaningless. Vitor Belfort got front kicked in the face and barely touch silva in their fight. Anderson Silva would destroy Bisping without breaking a sweat.
Even though what Bisping is saying makes sense, a interim middle weight belt would be meaningless as chael's fake belt.
THe UFC should either ask Silva to give up his belt or let things stay the same way. It makes no sense creating a second belt, look at the LW division BJ Penn won that belt, moved up in weight then defended that LW belt like 15 months after his last defense.