I certainly miss the good old facility of being able to swap slots allocated to flights on same routes/same destinations without recourse to CFMU. That really was of help, and could sometimes be a life-saver when, traffic-wise, the s**t hit the fan.
For all its proclaimed benefits, I find the current system is too restrictive for its own good. When you're trying to assist in getting planes away, especially when there are backlogs, flexibility is the key to success. I am afraid I do not find the current system as 'flexible' as it once was
