[quote=@Ellri]
aye, even editing first posts in each tab would be excellent.
[/quote]
Hmm, [@Genkai] [@Ellri], here's the simplest implementation I can think of for the "0th post system":

When you create a roleplay, the system also creates a first placeholder post in the other tabs. All GMs/coGMs can edit that first post.

Made an issue for it as a reminder-to-self: https://github.com/danneu/guild/issues/113