The guy behind Zuban should've put his project out the in open way earlier. I'd love to see both projects succeed, but in reality it should become one.
Why have "light" or "low" thinking then? I've mentioned this before in other places, but there should only be "none," "standard," "extended," and maybe "heavy."
Extended and heavy are about raising the floor (~25% and ~45% or some other ratio respectively) not determining the ceiling.