@dragosroua: More Complexity for your Computational Formulas:

The Steem blockchain has an interesting feature when SBD debt is too high. If the SBD debt exceeds 2% of Steem market cap, author rewards split starts deviating from 50% SP + 50% SBD, producing some Steem instead of SBD. At 3.5%, it is 50% SP + 25% SBD + 25% Steem. At SBD debt hitting and exceeding 5%, all SBD production stops, and author rewards are given out at 50% SP + 50% Steem.
https://steemit.com/steem/@liberosist/thought-experiment-sbd-only-rewards-at-high-sbd-price