Wait, they actually changed the character's look a little bit? Her face looked terrible when I first saw it, it was positively cartoonish. It looks much better now, but it still looks like a pretty boring and shitty character to me. The cosplayer has done a fine job and at least she actually looks like a real person now, but I won't be impressed by a story like this until I see a male cosplayer get this kind of attention.
Seems like bringing in cosplayers to portray hot female side characters is becoming a new marketing thing, big surprise there!