Conversation so far:
What was the Year Zero revamp?
during the last few years of the 1980s the association became less close, and was severed completely (although not permanently) in a radical shake-up known as the 'Year Zero' revamp.
What caused them to be less close?
Following a fall in viewing figures and a general perception that the show had become 'uncool' .

Question: Were any members replaced?
Self-contained rewrite: Were any members of the Year Zero revamp show replaced?