Some ideas I have bouncing around in my head:
A straight-out photo book: Nothing but photos and credits.
A descriptive photo book: Like above except with more information about what we are seeing. If it is a photo a building, it would have the name of building, date completed, architect and any interesting history, facts or trivia. Kind of what I wanted the ABWiki to be.
An urban design book: This would be my first choice. Rather than just focusing on individual buildings, it would look at how these buildings, and groups of buildings interact with the people who use them and how they add up to a collective whole (either successfully or not). There would be long shots of Hanover Street, City Hall & Plaza, Washington Street, etc in addition to pictures of buildings by themselves. This would need a strong editorial hand, but it would also be the most in the spirit of ArchBoston.