Again, if the idea is that they're going to do a Golden Age crime-busing Superman book, a Silver Age space-adventure Superman book, and other eras of the character published simultaneously, then sign me up for that and they can do a Jon Kent Superman title set in the present or future. As long as they continue to publish a Superman title with Clark Kent and all his history in that role, I can definitely get on board with this 5G initiative.
I don't see how they can pull that off, however, without it diminishing Jon's role as Superman or diminishing the other replacement characters' roles.