I'm tired of seeing the twins. I wish I could get a few other girls. At the beginning, it was Ice. Now, for me, at the end, every other opponent is using the twins.
That said, I'm using Indira, which is probably second most common now. On top of that, the twins and Victoria are the two I mentioned that now have better stats than Indira because of the better gear. Add that to the twins having one of the more interesting BJ animations, so I get why they get played as much as they do. Just wish there were a little more diversity.