23. Is there an easy way to determine the hit points of walls/towers/gates of fortifications, and the number and type of missile defenses they have?

24. More of an observation than a question. It looks like both the Master Foundry and the Marshal's Palace are both available after building the Demiculverin Towers addon to the Citadel, instead of requiring the Fortress. Probably just a typo in the build_prod file.