I originally thought about doing that with pocket. The trouble is that doing this would require putting inflation into pocket, and I wanted to avoid that and I have publicly committed not to add inflation to pocket in the future.
It would not be all that hard to create a new token that did act like an upvote token. Are you interested in helping create such a thing?
My answer is Yes. Because other whale like officalfuzzy already did like this. But we need to buy their token.