I will defer to your expert knowledge. What specific features would one expect in a phone NID other than I described (I believe I omitted color)
You could say that but it wouldn't be correct. The whole point of the NID is to define a DEMARC point with ready access for both the telco and the subscriber and always a tool less method to disconnect premise wiring in the form of a modular plug .
You are absolutely correct. The "box" where he noted he checked the connections might have been the litter box...