As promised, here is the response I received from Santa Barbara County FD:

Thanks for reaching out to us. While the Munger Hall is not our review responsibility, we are working very closely with the UCSB Fire Marshal in his review. We have a great working relationship with the Fire Marshal. We have had numerous meetings on this project and the Fire Marshal is open and willing to suggestions when it come to fire and life safety issues. We will continue to meet on this project and it is our hope that all fire and life safety issues will be addressed. I am available if you have any further questions or concern. You can also reach out the University Fire Marshal.

So, not a lot of detail (I expected that) but it is interesting that they do seem to allude to there indeed being fire safety issues which need to be addressed.