Hmm, those are some good points. I am mainly concerned with the difficulty in moderating the server well (especially as it scales) but your and the other comments have mostly convinced me.

If anyone is curious about the history like I was, the Wikipedia article is quite well done:

https://en.m.wikipedia.org/wiki/Eternal_September#:~:text=Eternal September or the September,access to many new users.

Just to clarify, individual accounts will be in trouble if they subscribe to communities on other servers that break the rules? Or are they blocked by default?