Seeing as how the girls all have the same face....good luck to the poor people that are taking their time trying to figure out who is who. However, I guess anyone that actually paid attention to the anime and actually know the name and looks of characters outside of Mugi lord knows I didn't even know the other girls outside of the 5 had names. Hell, even Jun felt like a one-shot character which was a big surprise when it turns out she actually was part of the story deserves a pat on the back.
Although KyoAni shouldn't be the only one to be picked on for stuff like that. After this is all done and well let's play with the Shingeki no Kyojin cast. That's where lunatic mode starts.