I've only just made it up to this point, so I'm not going to pretend to know what's going to happen, or how their looks will affect the story. I would like to point out, however, that I actually prefer not to know what each character looks like. I mean, sure, vague details are always nice, but I hate those cliche "looking in the mirror" scenes. I much prefer to create the character in my mind, by my own description of their extreme hotness.
I am enjoying the story, though.