They should definatly go on tour, there is no doubt. They need to think about their new fans. I myself am 17 years old and am a huge fan, also tons of kids in my high school are Zep fans cuz i see them walking around school with their Stairway to Heaven Shirts on and their dads old concert t shirts. My generation has never had the chance to see them in concert and i think that it would be incredible if they would tour. It almost wouldnt be fair to their younger fans if they didnt tour.