I have thought all along that LEED V4 changed too many requirements at once. I also suspect that numbers of LEED registered projects will drop dramatically once LEED V4 is required. I've done my homework - I'm ready for LEED V4, but an industry that still sends me "LEEDS" [sic] letters documenting recycled percentage in their carpet using the wrong terminology, can't figure out what a 500 mile radius looks like, and balks when I tell them smoking is banned on a construction site certainly isn't ready for a "more stringent" LEED. My opinion is that LEED V4 is an ivory-tower, impractical standard that will dramatically reduce LEED certifications. Yes, there are a few improvements that streamline or simplify requirements, but overall I believe it was a mistake to change so much so fast.