Eric, that whole design in the central area is effectively a series of nested (Russian Doll - one inside another) Reverse Loops. The design is a bit of a RLM nightmare and would need very careful assessment given the sheer number of track to track cross-overs included in the design as well. At first glance, I would think it would need a minimum of two RLMs and a lot of IRJs to resolve. I would want to know the answer to my second question (my "Further to above...." post) before I expended time trying to formulate a RLM proposal.
It is a case of trying to cram as much as possible into a small space. SCARM lets you do it. SCARM doesn't comment on the practicalities of whether the design is technically workable or not.
PS - Just spotted that SCARM is an anagram of CRAMS