Marla was, from day 1, the longshot of the season 2, Project Runway! If you leave the evilness aside, she can be easily compared to Wendy Pepper, from season 1.
The worse creator on the show, I don't think she could even be classified as a designer, since she doesn't design anyway (remember the Nicky Hilton challenge? For crying out loud, she just copyed the design, and made it even worse!!!)
She may be a great person, she seems really sweet and nice, but someone should shake her a little and tell her:
"Honey, you are not cut up for the business!!!"