Yes! it is urgent. If not what should we tell people right now? Upvote yourself exclusively until the fix because if not you'll lose ROI to the most unscrupulous.
To the second question, I don't know. These measures onto themselves without some sort of superlinear don't seem to solve the issue. Less costly or free flagging still returns the rewards to the reward pool as I've already mentioned, leaving the loophole open.
Different curation splits will affect the game only if some sort of superlinear reward is introduced.