The fact that users can submit a snap to multiple tribes would be the only thing that might make it difficult.
That's what i tried to explain by this:
I would also expect, that as soon as you create a snap and add a NSFW tribe the snap is auto NSFW.
The NSFW tag is still associated with the snap. It just gets auto triggered when in a NSFW tribe. So when you post it to a NSFW tribe and a SFW tribe the post will be NSFW in both tribes. That's how it should be anyway, right? A post should have the NSFW tag no matter where it is posted.
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