There are no Jerry Garcias coming down the pike, anymore than there is a Jimi Hendrix or Bob Marley. They are all at the same level - the highest level that you strive to get to as a musician. Me and my friends - we'll all be long dead, people will still be trying to dig into what Jerry Garcia did.
I once sat on the rim of a mesa above the Rio Grande for three days and nights, trying to have a vision. I got hungry and saw God in the form of a beef pie.