Should induction be based on pure musical talent alone, Ben Harper would be considered by many as a shoe in for induction when eligible.  Harper seems comfortable performing music in any style and his concerts are journeys that reflect his abundant skills.  With songwriting ability on par with his musicianship, Harper became a beloved on college radio and the Jam band circuit, but not a whole lot of other places.  Since that never really happened, an induction to the Rock and Roll Hall of Fame seems unlikely but his respect level from those aware of his music is very high.