I am a business systems analyst with a bachelor of science degree in business. My experience
has primarily been on the business side of IT projects, rather than the technical. My objective is
to work as a consultant. Would a bachelor's degree in IS be a waste of time, or should I focus on
an MBA with an IS concentration?
The MBA with the IS concentration is the recommended route. You are already doing business
systems-analyst work, and the wave of the future for consultants is really not how technical
they can be but how much business value they bring to the table.