Are you aware what Desmond Child looks like and how much money he makes writing songs for other artists? I think neither the housewife demographic would care for him (ie. the band would not make more money) nor would he particularly like giving up being a full-time producer in order to be a touring musician.

And didn't somebody on here mention that Billy Falcon is actually a widower? No idea how many kids he has, I know he has one daughter.