I doubt this has been explored at all, since this being a forum software in general and not something like Google Docs or any other collaborative software out there in the wild. I would like to see it as something Discourse has with there "Wiki Posts" but I won't suspect it to be even a low priority for the devs.
There is another simple request I have for you:
Do you see the "Cancel" and "OK" on the message box on the screenshot below? They aren't available for translation on Transifex as well. I would be pleased if you give me a chance to translate them. Thanks