She does seem to go on a binge by feasting on the opposing cheerleading team.
I wouldn't like her to become another Katherine, I like Katherine and her character but do not want a twin of her character.
A ripper Elena would be fun to watch as she is always so tightly wound up all the time even after becoming a vamp she hasn't let herself enjoy Vampirism.
Maybe the show could move to some other locality where Elena could run away from MFalls and the Salvatores will have to follow to save the people of that town from Elena.
If Elena does become a Ripper her chances of being free to enjoy humanity are slim as she will simply die if Damon asks her to feel again. Remember what Stefan went through to get away from Ripper Stef, he is still, struggling.
Maybe Elena would become so detached that she would go along with Klaus plans or even Silas plans to kill 12 more and help Bonnie as Elena without humanity may not be concerned with what will happen if they unleash the other world evils on humans.