Specifications should not be so relevant to the end user, NIP-4, NIP-17, and NIP-EE can be easily collected in the same Messages area, and often merged in the same discussion (e.g., NIP-4 + NIP-17 + Zap message), with different indicators (colors/icons/labels) to highlight strengths (privacy, security, attached payment, etc). Kind 9 & 1311 have they own specific context, and possibile mentions shuld go to a (tendentially ephemeral) notification area.