As a vulcaness, a dead pan delivery without emotion is an asset. As any other character, it's a liability. What was she thinking when she got a lip job? Do people really believe that wearing two slug worms around their mouth orifice is endearing? Perhaps Wholly Weird convinced her that caricature is the same as character. She's now a caricature of her self.
After catching her on Starship Troopers 3: Marauder, and recently, on House M.D., I am convinced that she needs corrective brain augmentation and talent infusion. It could be worse, though. She could have her own television series to drive into the ground... on NBC.