@dafdaf I think you mis-understood the chart. These are operating profits, not reward share. The protocol cannot "decrease the miner's red part", it's set by the free market = mining competition.
Yes I know, it was pure fiction from me, granting you superpowers to restore equality between masternodes and miners.
Tax pressure is as illustrated. Massively asymmetric.
There is no such thing as “symmetry” or “asymmetry” for the taxman. Even if both vertical bars (miners/MN) were equal according to your wishes, how would the overall tax pressure be different?
I think (respectfully) that you've introduced the tax factor much too recently in your arguments. That factor smells funny.