Buzz and Sleeve speak wise words;
Like any large company, the executive board of the AG will expect NATS senior management to run the system as efficiently as possible.
The only difference between the old and new NATS management will be, I suspect, that if the the existing management aren't up to the job, then they will become the old to be replaced by the new.

I strongly suspect that the staff at the sharp end will see little difference in the way things are run, and see even less of the top neddys who will be too busy being very important somewhere else.