Yes, what @teamsteem mentioned. What you have in mind is part of the plan, but it likely can't be the only change. The other changes required are preventative in nature and promotes better behaviour with the most minimum amount of work imaginable when it comes to voting on Steem, which is supporting the greater good. It has to be the path of least resistance. But it's not possible when one can just sell their votes for so much returns compared to the proof-of-brain stuff. The economy should at least place curation and vote trading on more or less equal grounds, if not favouring the former.
The suggestion / proposal which also includes the separate downvote pool can be found here: https://steemit.com/steem/@kevinwong/the-number-one-fix-to-improve-steem-s-chances-for-mainstream-adoption
But of course, we may also not want to be so confident, so any simple iteration is better than none at this point. I just think that some of us have debated and reasoned this out well enough to merit the full implementation..