The n^logn curve seems quite steep in its super-linearity
The current curve being considered is (n^2+2cn) / (n + 4c) which seems to be a lot fairer as it has a subtle dent at the beginning and quickly becomes linear
The idea of having downvotes hit curation harder than author is interesting. I don't know if it's needed right now, but could be considered later.
Curation overall could definitely use an overhaul as it will play a much larger part post EIP. Curation curve, 15 min auction timer, auction curve, etc are all things we should reexamine after the initial EIP is released.
The EIP is primarily concerned with attempting to encouraging large scale honest voting behavior. That is getting people to vote based on some subjective assessment of content rather than just using them as a form of staking returns in a way that's entirely indiscriminate of content.
RE: A serious attempt at repairing the STEEM Economic Improvement Proposal (eip) for HF21