Yeah. There are some bands where the lineup changes constantly barring one or two members but the band sounds just as good over it's entire history because that one or those two members are the members most integral to the band's sound, evolution and chemistry. Meanwhile, there are some where if you remove one member, it's a completely different band because the band is so tightly knit together and each person in the band is integral to the band itself. Rush is definitely one of the latter type of bands. Since Peart has retired, the band is effectively dead. A similar thing happened with Type O Negative after Peter Steele's death in 2010. You really can't replace people in that sort of band. Not only would it be a disservice to the sound of the band, it would be a disservice to the relationships that led to that amazing sound and the person(s) that made the band what it was.
