It’s been discussed but it is a complex thing to build, and we’d only build it for enterprise customers who absolutely required it.
There are one or two relatively minor related feature things Discourse would gain out of implementing this, but it’d be a lot of work, so the cost/benefit is not quite there outside enterprise.
@sam might have more to add. This is not currently on our roadmap, to be clear, because the enterprise customers who “needed” this suddenly decided they didn’t when we told them the cost 