I agree that the most i mportant thing is the ability to use short focal length lenses with large image circles. To make good use of such lenses, you need a lot of rise with relatively short bellows extension. That almost certainly means the use of a bag bellows.
A good wide angle lens for general architectural photography is the 72 mm super angulon Xl, but it is heavy and not all view cameras can handle it. I wish I had one and my camera could use it effectively.