I note your consideration of seeking greater financial returns from your voting will potentially change who you vote for. This is exactly what I refer to when I point out that curation rewards encourage the opposite of curation, profiteering, and why I also have never paid them any mind. The idea behind curation rewards I read in the Steem White Paper was to encourage people to vote for good content.
You and I do that without regard to curation rewards. Doubling curation rewards means that folks that do that instead of seeking the greatest financial reward from casting upvotes will be penalized twice as much as before for actually curating what we feel is the right content to upvote.
I reckon that's a terrible loss to society. Might as well just hack up a bot to maximize curation rewards without any regard to content or author quality at all. It's not really curation rewards. It's just votemining for Steem.