Here's the problem...

Only whales can get away with downvoting anything that is significant. Thus, the value of downvoting does not end up practically having anything to do with "the wisdom of the crowd.

If the "wisdom of the crowd" were the primary desired resource to harvest... further increasing the ammo of a few whales (minnows dare not use the extra bullets given them because they already fear to get into a "downvote" battle with anyone as it is) is going to put Steemit even farther away from that intended outcome.