3) Based on the original specs, BNB was going to burn 20% of profit.
Based on this update (binance.com/en/blog/421499…), it's now unclear what they'll burn, but maybe something like: 80% of profit (up to 100m tokens, and nothing after that)
"Coinbase recklessly delivered false, misleading, or inaccurate reports concerning transactions in digital assets, including Bitcoin, on the GDAX electronic trading platform it operated."