You could prioritize them or not. There are some advantages to having a little bit of flexibility. At the same time - they're also still up for discussion. Draft until the Final Report. Rank the developer that best demonstrates intentions to implement your principles, your vision.
Drawings are limited, can limit the developers' responses.
The visions attached to the RFP are the committee's vision of what they want to see. It is clearly in committee's interest to word RFP broadly, get more input, whether or not drawings are included as well. Concern with how renderings relate to zoning, and what would work in the area. Question about purpose of guiding principles - to guide the character of development. Drawings can be examples of the character without limiting how to achieve guiding principles and goals.