Not really. If you're referring to the ILS system, even with a CAT3, a majority of the aircraft that had to div out last night wouldn't have got in anyway. Yes, the Airbuses and Boeings would have, not sure about E145s & 170s, but the helis, JS41s, Q4s, Saabs - probably not.
So it's not that the airport needs to 'move on', the aircraft that serve it need to. Why would the airport 'invest' in something that is needed so infrequently, and when it is, can only be used by half their customers?
You could say the same applies in regard to the runway extension.