I don't think so! HD may not remember this - as I think Approach had already left - but back in the mid 90s we in LL TWR enjoyed a few weeks without a GM ( the one-eyed golfer was away somewhere 'really important' ) and Manager ATC left to take up a new post ( GM KK ? ) before his replacement had been appointed.
Did we miss them? Not at all! We the REAL workers still shifted the same number of aircraft, Watch Managers exercised what control was needed, Training Officers still oversaw U/Ts, LCEs still kept their beady eyes on standards - it was a shame that the GM ever came back!
In the many years since I retired many people have asked if the job was stressful. My reply was that the most stressful part of it was management! Most of them a complete waste of space. Rant over!
By the way Gonzo and Good Egg are too young to remember the debacle when the Cardiff contract came up for renewal in the late 70s - the outcome describes managers to a T!