@snowflake I disagree with you that "Steemit is about rewarding content creators". If you read the white paper, rewards are supposed to be for all valuable contributions, not just "content". The former includes voting.
I agree with @ats-david that the curation rewards should be increased and, if they were, a lot more users (not just bloggers) would be getting significant rewards on a regular basis and would be more enthusiastic about the system and in turn telling more of their friends (also not just bloggers) why they should sign up. The cut from the original design has not just been by 50% but more like 75%, and this has had a devastating impact not only on the incentives to buy SP but also the incentives for non-bloggers to join and participate at all.
The other changes I would make to curation rewards are to make them less top heavy (by generally making rewards less top heavy) and to make them less front-loaded meaning reduce the share that is earned by the first votes. All voters should get a share (early voters can still get a bit more). Both changes would reduce a lot of the current incentives to run curation bots. If early voters on the best (by far) paying posts didn't get such an enormous share of curation rewards, more of the curation rewards would go to ordinary voters.