OmgitsDave, having been involved for a number of years with the feasibility of the Metro I can say that when it happens I will be in Binns Window without trousers, sorry but it aint gonna happen, and the reason is simply there isn't the money available.
And IF there ever was, it won't save Peels airport, the reason for that being that most of the punters wont struggle with suitcases on the train, its much easier to stick 'em in the back of the car and lug 'em from the car park.Which was why the old rail halt was hardly ever used.