One of the reasons there is so much acrimony about grades is because a 0 to 100 scale is way too broad. If you hate grades as they are, and I know you do, imagine how much less you would hate them if every grade was issued on a 1 to 3 scale. Suppose also that the final grade a student received (for the year) was not an average of all the earlier grades, but determined separately on a 1 to 3 scale.