Is there any book from previous editions that you want to update some of the ideas to 5e? Zoltar 6 years ago Comment from discussion AMA: Mike Mearls, D&D Creative Director. Share this: AMA Mike Mearls, 5e D&D May 2017What is OD&D?Jeremy Crawford is the only person on the D&D R&D team authorized to answer D&D rules questions