Progressive Reason and Progressive Logicism

As requiring that the doing of A be better than not doing A, the Practical Principle of Sufficient Reason promotes an amelioration of given conditions.  Thus, regardless of the criterion for determining 'better', e. g. Consistency, Greater Pleasure, Greater Happiness, etc., it can also be called the 'Principle of Progressive Reason'.  Likewise, the corresponding theory according to which Language is derived from Reason can be called 'Progressive Logicism'.