Other than the “bragging rights” of getting a low number, and proving that you’ve got fast fingers, a fast phone, a small boarding group, or just plain dumb luck, I don’t see much advantage in getting a single digit number over one in the top 40 or so if you were planning on spending a few hours at DHS anyway.
It seems like the ride always has at least one delay or breakdown in the morning and sometimes it’s the folks with the lowest BGs who get evacuated. After the craziness of the “lottery”, I’d be just as happy to do that first ride that I lined up for an hour before opening, and take my time using my 3 FPs while keeping an eye on how the ROTR boarding is going.