It would be better if the blockchain was able to react to SBD price increases by arbitrarily creating SBD and trading it for STEEM from users in the internal market. The STEEM could then be destroyed in order to reduce the supply of STEEM and increase its price. The price increase of SBD would therefore be transfered to STEEM and the 1 to 1 SBD peg to the USD can better maintained.