^Do you mean separating AKB/SKE/SDN/Kenkyuusei? We did think about that (naturally), but decided against it for a number of reasons. Firstly, all girls are created equal. lol. No, but seriously, we took this approach because it will give the non-popular girls a bit more exposure. I mean, if someone isn't interested in SKE, they might ignore a SKE subforum all together. With this approach, someone might see a thread of a girl they have never heard of before of a thread with many replies and they might check it out.
I know there are some counter arguments/flaws against this idea, but still, there are 50 girls on the first page of the girl's section so everybody has a chance to shine.
And there's always the fully up-to-date girl index if someone is looking for a particular thread.