Some ideas for safety features, to make it a fun experience for everyone.

Swear blockers: allows swearing, or any other language of that such online, excluding discrimination, as that is wrong, and will still result in a ban, with an option to censor it on the client side. Parental controls asigned to acounts could also impact this. Server rules still will apply. Cape censorship for accounts in certain countries, which will make it so that on a person's client side, based on their account, if they are in a country that doesn't allow pride flags to be shown, the texture will render as black for them. This way, Java players will be able to get the pride cape.