Small accounts get an average of zero to 3 cents per post, NO MATTER how good their content is. Sure after 50/50 the whales will get more rewards, but every good curator will as well. After all STEEMIT was designed as a content discovery platform. So the best posts should get the most rewards. But this is impossible under 75/25 model. There is just no incentive to vote the best content when a simple self upvote or bot delegation is much more profitable.
And the minnows' curation rewards will increase as well. If the minnow is a good curator he might even make 10 to 20 cents in curation per full upvote after this change, which is impossible now. You would just have to be among the first to discover good content.

This platform has always favored the ones who trust in it and invest FIRST! If you think that you can make a decent amount of money here without investing first, dream on.