Page can still play. So can Jones. Plant has lost range, but he's a far better singer now. Bonham's dead and can't be replaced, but why try to replace him? There are plenty of really good drummers working today. If Led Zep wants to come back and do some new material that fits a current band configuration, I say go for it.
I hope I die before I get oldThey didn't really mean it when they first said it and they certainly don't believe it now. But it did sound cool!