How about OP's stickying comments in their posts in subs they don't own?
That's the subs' owners/mods responsibility to decide what gets stickied.
Their subs, their rules (as long as they don’t break Poal’s ToS).
Sub owners could have an option to allow or not allow OP's to sticky comments, and could override and unsticky stickies they don't like.
What about the other way around? OP can PM sub owners/mods and ask them to sticky a comment.
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