As I understand the directive of the senate the intent was that all students would have some set of the SAME basic computer skills. Discipline specific skills come in discipline specific courses.
Artists using computers undoubtedly know more about what is needed in their classes.
But those are advanced skills, not literacy skills. If they were literacy skills we should require all students to learn them. Even advanced technical German for scientists is taught in the German department, not natural sciences. I don't think we want to offer those courses outside of the computer sciences discipline. This would be equivalent to offering different version of W131 in different divisions for different majors because they will need different writing skills since they will be writing different kinds of papers.