NROI often gets emails suggesting changes to the rules or ideas for new rules, especially when it comes to Division requirements. Yes, NROI does make suggestions for rule changes to the USPSA Board of Directors, but we usually are fixing the rules for penalties, DQs, and other things that affect how matches work. And these changes are done via NROI Rulings from the DNROI (see this post for more info) which then need approval by the BOD.
When it comes to what is allowed/not allowed in certain Divisions, we always encourage members to reach out to their Area Director (see bottom of USPSA contact page) and suggest the new rule or change to their Director. The USPSA BOD are the ones who decide the changes in Division requirements and base their decisions on feedback from the membership.