I went down to Vermillion last year for the UND/USD game. The Dakotadome may not be the best football facility in the country but it is definately a pretty good one, especially considering it's age. If USD can get a new basketball arena, permanent seating would most likely replace the portable bleacher seating on the west side that is currently pulled out for basketball. And USD is currently remodeling a building on campus to be used as a student rec center. With this happening, capacity could be increased and create more room for football operations.
If UND had the Dakotadome sitting on campus, I wouldn't complain too much.