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I do agree, a positive approach generally works better than a negative approach. But, downvotes are required at all times. It is finding the right balance. What about extra rewards for those who do good, whatever we define as good, on top op votes/rewards to post and comments directly? Maybe incentives towards accounts at account level?

I would tend to say this is good. Anything that rewards people involving themselves on the platform is IMO good, whatever it is.