Chaos on the horizon?
I reckon this initially attractive idea would demand a high level of coordination from ATC, airfield designers and operators.
Starting engines out on the field without considering the rest of the infrastructure might just prove to be a bridge too far, especially when problems of the technical variety crop up.
It took a long time to get a good en-route de-icing procedure working at many airfields and even now each field has its own docking system, taxyway numbering system and so on. Before this goes to far I suggest that JAA and FAA coordinate a procedure which is standard across the world.
The manufacturers should be next in line, as a self towing aircraft (powered
mainwheels) would save a lot of machinery and manpower out in the sticks and possibly some fuel too.
FC.