thanks for taking the time to review our first contribution and provide constructive feedback.
Both of your suggestions will be considered, there is real merit to using higher volume to reflect accurate real world trade scenarios so the fee doesn't obscure the actual price. Future analysis of exchanges we provide will include the fee adjustment and the larger volume transactions.
RE: STEEM/BTC and SBD/BTC: Exchange Rate Technical Analysis - September 04th, 2016 - Poloniex vs Bittrex and Blocktrades vs Changelly vs Shapeshift - featuring new author @steemwatch