MAN is only running at 60% capacity ! Biggest moan I see is passport control, but that is run by Border Force and I am sure MAN puts pressure on them to do a better job / have more staff, but its a bit beyond their control TBH.
I'm quite a seasoned and regular traveller, always starting and ending trips at MAN and quite frankly I rarely encounter any issues and enjoy the experience...maybe my standards are not high enough...or maybe its not as bad as folk make out !