What i liked SPOILERS
what i really enjoyed was that they changed the ending of the play, from her killing him to them still being together but the "dark" way she told him not to be tiresome was just to much in my opinion.
Mayhew committing suicide was stupid too in my opinion and i don´t see a reason for him being poor at the start of the story. they could have easily kept him as a rich successful barrister/solicitor whose son went to war to impress his father and then the son died and his wife couldn´t forgive him that.
His severe Bronchitis was also annoying af.