This is wonderfully supported in ActivityPub [the protocol].
This is what the "nameMap", "summaryMap" and "contentMap" properties where made for:
Redaktor here, we will support it, I can't say what will be published when, only that I'm working hard ;)
I would also love to see other clients supporting it.
Respecting that the Internet has more languages than english.
Server run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome as long as you follow our code of conduct!