AC/DC whilst not my rock ' cup of tea' one of the exceptions where a highly respected singer's replacement arguably took them on the even greater commercial success
Kind of depends what the reduced members contribution to the original band was.
Last Friday I saw Level 42 in Hastings who had Mark King and Mike Lindup. Obviously, King's bass was a huge part of their sound and similarly vocal wise the combination of King's baritone and Lindup's falsetto...