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These are features that could make it easier for someone to use SN as a newsletter, but would probably only be worth it for the team to work on if there was a strong, clear demand for the use-case.
It seems like good ideas to me, but you nail it in this paragraph. From the numbers available, the SN is really small (it'd be interesting to know the views though). I think right now it'd be a massive development cost for the current demand.