The sales pitch is

1. Curation is broken. A too-large and increasing portion of the reward pool is going to self votes and paid votes that bear little to no relation to quality or value brought to Steem
2. As a dedicated quality contributor this is hurting you.
3. By making a set of changes, including (but not limited to) changing from a 75/25 to a 50/50 allocation between posters and voters, we are attempting to shift the economic incentives away from this sort of self- and paid-voting and toward curating on the basis of a high quality, high value contributions as determined by a system better turned to measure stakeholder consensus (as opposed to unilaterally-decided self votes and/or paid votes)
4. As a dedicated quality contributor this would likely benefit you.
5. Can we promise that the 33% decrease in gross rewards will be made up for by a combinations of a) A larger share of rewards going to your quality contributions; and b) Growing the value of Steem thereby increasing the entire reward pool (including your share)? No! We can not guarantee this but we think it is a very plausible outcome.
6. We also believe that doing nothing and continuing the failure of its premiere feature (stakeholder/voter-allocated rewards used to promote growth) will likely result in Steem continuing to stagnate, and likely continuing to decline in value. Your rewards will decline with it.
7. Please support this initiative for the benefit of the entire Steem community, including you.