Well, on the topic of adding stuff to a graduate program of study, I’m about to contradict myself. You CAN add stuff to a graduate degree program, primarily through the use of a graduate certificate to take up any elective spots, and if correctly placed they can enrich the overall program. I am seriously considering adding Cognitive Science as a graduate certificate if I am admitted to the Clinical & Community Psyc program at UNC-Charlotte.
Cognitive Science Program: http://cognisci.uncc.edu/content/view/3/2/