True to a point. Honestly, the reason they choose the numbers they choose, is the FDA agreed with the methodology that Medtronic presented.
Having the FDA bless setting the target of 100 or 90 is going to require a study since the FDA physician advisors would say that these settings will increase the amount of hypoglycemic events. The good news is once the algorithm is out, these types are studies are pretty easy to do.
Now whether the companies will decide the advantage is worth paying for. who knows. I hope so…
Other ways to get what you want is to have the open source folks crack the existing system and over-ride it.