I am kind agree with you. The only benefit of SBD is flooring rewards for authors. But its cost is quite bigger (i.e. publishing price feed, adjusting witness policy, additional selling pressure when STEEM price is going down, etc.). By removing SBD, we can remove large proportion of complexity.

Pegged asset sounds sweet. But in fact, it is basically a community money as well as STEEM. For instance, ETH person never uses SBD even though 1 SBD perfectly equals to $1, while Steemian is willing to use both SBD and STEEM as a payment method. Volatility is less important than belief in the platform.