Update: I've run through all the games. Here's the list of games that are currently compiling:
Deadline
Enchanter
Hitchhikers Guide to the Galaxy
Hollywood Hijinx
Infidel
Planetfall
Sorcerer
Starcross
Stationfall
Suspect
Suspended
Zork I
Zork II
Zork III
The rest are not working, mostly because of the number of scripts. A few have other issues that I have yet to resolve. It is looking unlikely that this tool will support z-machine version 6 files (Arthur, Journey, Shogun & Zork Zero).
The good news is that I've got a workaround for excessive script issue by utilizing unused script numbers. Currently, I start the procedural scripts at #300, instead of immediately after the last room number. The room numbers are also not 'dense', so there are gaps - the reason for this is that the room numbers follow the order in which they appear in the decompilation & the gaps are other objects (it's a hierarchical presentation with regard to nesting - rooms are the top-level objects). These two things, coupled with the fact that on average I'm only over the limit of scripts by 50, I can get another 9 games working.
Beyond Zork, Bureaucracy, Sherlock & Trinity blow completely through the script # limit and require combining scripts to get below the limit. I may just skip these games and come back to them another time, if ever.
I have identified a game that I think I'll be able 'decompile' and include with the release of my tool, because it was given away by Activision. Zork - The Undiscovered Underground, but I don't have a symbol file for it, so I'll have to create one.
When symbol files are 'barebones', the majority of the procedures are generically named, so I'm seeing opportunity to apply additional processing to attempt to identify what their names should be, largely based on cross-comparison of games.