I'm curious...what do letter writers actually have to write about in the LoR? I've heard that character references are considered useless, but if that's the case, what more do they have to write about than on our grade/rank in class and maybe how diligent we were? They often ask for transcripts, resumes, and the primary essay, but what would they take from this to write about us that the admissions committees wouldn't already see from the primary application itself?