Its funny that everyone that has tried to use communities since last year comes to the similar conclusions around the user friction.
NIP 72 needs clarification that ANY kind can be a post into a community, and not necessarily kind 1 which is basically general notes.
It would be ideal if a specific kind was assigned for textual community posts, or if clients were more opinionated about kind 1 notes to retrieve and display. The former is easier as rules around a tags vary too much.
If i were building a community client, id just pick a number and document it. probably 4549 to pair with the 4550 approvals.