Before opening a ticket in the tracker, I thought I would throw out a proposal here first.
We are having a problem with the interpretation of the string "Grade" in the Quiz editing form, like the one documented here: http://docs.moodle.org/22/en/Building_Quiz#Assign_points_per_questions
Our teachers are interpreting this string as if the total grade would be the sum of the grades. But what really happens is that a weighted average is taken. A short-term solution for our problem would be to change the language string from "{grade/}" to something else (like {questiongrade/quiz} or {questionweight/quiz}). This would allow us the change our translation to something better in tune with the expectations of our teachers.
A longer-term solution would implement diferent aggregation methods, like the gradebook. But I am not sure how urgent that would be.