Keith should sport a “Grim Reaper” suit with a scythe-headed guitar at some of their shows. They could call him The Grim Richards. That’d be funny.
Richards is aware of the jokes about his longevity. I was watching a bio of Brian Jones and Richards said something to the effect “he was drinking to excess and non-stop drugs made me just know he wasn’t going to ever be 70.” then he paused and laughed. “As if I’m one to talk. But I’m still here at least!”