To me, I lose interest when people in groups/programmes get replaced. Stop listening to the Chilli Peppers, when John Fruiscante was replaced with Josh Klinhoffen. It went from face melting solos and great records, to the sound of a beginner and mediocre tunes. The same as when Mark ‘Tucker’ Fowler, left Eastenders. Ed China, made that series work. He was actually interesting to watch, as he would explain what he was doing, and being mechanically minded, it was just better viewing.
Only seen the early ones but love it almost as much as First Dates. Always amazes me how Ed knows so much about such different cars. He always recognises it as soon as he comes out the garage without having to even look at the badges!