Well lots of people report ongoing Radio problems after expensive refits, so not everyone a happy bunny there. The cost of a full refit really has concentrated the minds of those who only operate privately with low utilisation. With the lack of a large 'World Market' there is no real competition for a simple tray replacement fix. No benefit to GA for the cost involved, and no benefit from a better 'air traffic' service as many 'providers' have a lack of staff to give a service to those who would call up when in transit.