TL; DR version: Start your apps early to ensure you know all of the requirements.
While attempting to nurse my bruised ego back to an acceptable level (thanks to yet another underwhelming LSAT performance), I started my actual LSAC school applications this morning. I'm applying to 3 schools, each of which I have researched exhaustively on their websites and on other forums. Only 1 of the 3 schools has a "Why X" requirement published on their admissions page, which, like any good obsessive law school applicant, I have already written. However, in each of the other 2 school LSAC applications, there are specific questions that lead to a "Why X" essay (and an additional "What ties do you have to the area" essay). I groaned when I saw these questions because I thought I was largely in the edit / revise phase of my application materials and now have to draft 3 more substantive essays (2 Why Xs and 1 What ties).
I realize its a first world problem, but still: Come on, man.