babotika
Have you thought of the advantages of the UK system? Like the fact that all the radar traffic in the area is working the same controller? How about the problems of operating the system you suggest? Have you ever heard how busy Farnborough gets? London would end up with so many sectors you'd end up changing frequency just as often! It might not be a perfect system, but it has developed for a reason (well, apart from the new ATSOCAS system).