When I look at the columns in my gradebook, I noticed that about 2/3 of the width is used by *empty space*.  Further, if I resize my columns to try to reduce the empty space (to allow me to see more assignments on my screen at a time), the empty margins virtually destroy any characters in the assignment title of the column.

My suggestions:

a) Make the empty margin a much smaller percentage of the column width  AND

b) Allow the title of the assignment to have text-wrapping, so we can make the columns smaller without losing the titles of each column.