Fist of all i undestud what u intend to do i i'm a all in that . No need to talk about that
1.if u realy realy wona do this it must be no adventage to the miners ok i'm all in that
2.But also must be no advantage to early invesment and early dewelopvers that part i cen not see i here u have a lot of problem.
3.mining MUST take all of the fees and noone else that is all (not a bit tinkering about this)
4. I see also centralization here there must not be centralization at all
5. I think u miss this wery wery inportant points
thanks and sorry for my bad english.