Thanks for specifying passages.  I see what you mean about lightening sentences but two issues: One it is manufacture not distribution/dealing and it is a reduction of minimums and maximums rather than, as you originally put it, a broad "not putting dangerous criminals in jail."  There are some circumstances, such as the zero to two year sentence for class b or c felony being suspended.  However, it should be noted that it is only for first time offenders.  Second offenders of both c and b felonies are sentenced to a minimum of one or two years respectively.  Also for Sec. 91 and 92 while they lower minimum sentences they do not provide for any new avenues of avoiding jail time altogether.