I understand what you're saying. Maybe I wasn't clear in what I said.
New ideas are always great to incorporate and should never be disregarded just because they are new.
However, there is a difference between that and simply buying a certificate to teach.
In my opinion, for Krav its a hard thing to balance at this point in time. It is a great system and is growing rapidly
However, its hard to keep motivated people in a system when those students (who by their nature have put many long hours training) see a short-time instructor pay a fee and obtain elevated status. There is a credibility/respect issue.