I think that of your proposal, the second and third points are the strongest and ones I think I could support if implemented properly.

Keeping inflation stuck at 10% or having it as a witness variable doesn't make a whole lot of sense considering as such inflation balloons the money supply. The current system makes sense and adjusts to slowing growth over time and there is no hard cap which allows the money supply to continue to grow once mainstream adoption is achieved.

Your fourth point seems unrelated to this whole discussion. I agree that we should be looking for fairer distributions, but creating a downpool rewards pool makes little sense to me. Imagine a whale abusing it and the havoc they could create. We don't need incentives to patrol abuse. We need incentives to curate more effectively. We can't stop greed, it's too hard. More simply put Proof-of-Brain needs to be more rigorous so that greed benefits the platform more effectively.