My problem all along with carriers sans cat and trap is that they are totally wedded to a particular design of aircraft. There is NO probability that a future stovl strike aircraft will ever be produced. If the US Marines hadn't wanted it, there would have been no F-35B. So when the F-35B finally dies before the end of the carrier life - what then? The MoD has been looking at EMALS we hear. EMALS are usually variable power - able to launch heavy strike aircraft or small drones. We know the F-35B has apallingly short legs. One can but hope that something sensible will emerge.