"What If" general concept idea that seems to fit in this conversation...
Within the context of this system, what if resteemed content actually took the form of a new post. It would be classified within the link sharing content rewards, and would auto split a given % back to the original content author. This would reduce the drawbacks of the current post payout periods by allowing content to remain somewhat evergreen and capable of gaining an additional rewards trickle. At any time a post could go viral and would result in a solid rewards pyramid back to the content author.