What are the rock bands from the 70s & 80s that te wish te could have seen that no longer has the lead singer now that they did then?

for me furgone, van Halen when David Lee Roth was in the band I believe they were the best. Journey when Steve Perry was lead singer the band hasn't had nearly the success it has had since his departure. My lista can go on & on but these are the probably the superiore, in alto two =)