MR credits need to be radically simplified. Below is an example simplification:

"Combine MRcr2, MRc3 and MRcr4 into one credit. Create Option #1: Disclosure (3pts) and Option #2: Material Improvement (3pts).

Option #1 = 10% by cost (at least 5 materials) - Materials have EPD, HPD and/or Cradle to Cradle v2/v3 Silver. (Materials are weighted at 50% if EPD / HPD is not third party certified.)

Option #2 = 50% by cost (at least 10 materials) - Materials are: certified biobased material, certified wood, reused materials, recycled content, certified to have no Benchmark 1 GreenScreen v1.2 hazards, and/or Cradle to Cradle v3 Gold or Platinum certified. (Materials manufactured, extracted and sourced within 100 miles count as 150%.) "

This will eliminate many of the problems with the current writing of these credits such as mixed metrics, requiring certifications that do not exist yet, the vague and contentious "USGBC approved program" language, complicated credit tracking, etc. etc.