He obviously stole the idea from me.. I still can't believe I haven't played the Warren. Other obvious additions: Spring Valley, The Mines, Shepherd's Crook, Lawsonia Links, Harrison Hills, Rustic Canyon and Ravisloe.
Jud, I love ya, but what is with this fixation you and a few other guys have with Spring Valley? The best part of that place is the bar, IMO.
Brings to mind a story from this past fall. Two GCAers and I played in an end of season, hit, giggle, and guzzle event at a course out here in the west burbs. Post round, we were eating and drinking at a large table with some guys from other groups, all strangers. One of the aforementioned GCAers struck up a conversation with a gentlemen at the table. I'd characterize their little exchange as your typical back and forth regarding favorite local courses.
Our GCAer was eschewing mention of the well knowns (Cog, Harborside, etc...) in favor of more esoteric options, including Spring Valley. After our guy used several of his turns to tout the merits of SV, the other gentleman looked upon him with almost protective paternal disappointment and said, "you know, that course isn't rated very highly."