Instead of contributing to an existing project, which fits those requirements, OP would rather just create some new coin and give himself a hefty 50% premine - we see this like almost everyday on Bitcointalk.
BTW the white paper does not go into any detail why this thing would be more decentralized than other PoS algos. All I am seeing is a vague proposition for a new style of distribution but that does not mean it would be more decentralized than prominent PoS and PoS variant projects.
Because the change is too fundamental. Btw, I have updated the post to reflect your discussions.