Yes. This payload may be replaced in the future.
Discussion
Maybe try the new kind 30023?
I am sorry. I was mistaken. I only meant that there is a possibility that the specifications may be changed, not that the content of the event will be changed.
In Nothello, events (not likely to be changed) are added as the game progresses.
But it would be interesting to develop a game using the NIP-23 specifications.