I understand that, but the reason that you get grades on assignments throughout the semester is so that you can get an understanding of where your level is and

I understand that, but the reason that you get grades on assignments throughout the semester is so that you can get an understanding of where your level is and how you should expect to be evaluated at the end. If you get a bunch of subjective feedback throughout the semester, but no grades, then you seemingly have no idea what to expect when you receive your final grade.