Maybe so, but realistically it would likely be years (at a bare minimum a year) before that sort of code change is made on Steem given current development processes, resources, and roadmap. Meanwhile, we have to make the most of the system we have.

IMO the most realistic change we can make near term which makes SBD function more closely to DAI is to enable STEEM contributions to the SPS, but even that probably won't happen either for several months at a minimum.