The 700m is a serious need! At the moment the runway stop end on Rw25 does not comply with the latest CAA restrictions NCL keeps it's figures by god father right's, as in the runway was built before new restrictions! Each time work is done to the runway they run the risk of the CAA turning round and reducing present runway figures! So the 700m wouldn't be a total win around 2-300m would be lost in the increase to the runway stop end of 25.