Some of the following POI's I think would be nice for different kinds of calls to add more diversity to the fire calls:
Airports- Plane Crash, Fuel Spill, Bomb Threat, Suspicious Person, etc.
Beaches- Drowning, Fight, Underage Drinking, Alcohol Poising, etc.
Ports- Boat fire, Boat accident, Commercial Structure fire (possible hazmat), etc.
Commercial Warehouse District- Commercial Structure Fire, Silent Alarm (PD call), etc.
Additionally, if the Hose Tender Unit (Foam) could be used as a standalone engine. Allows them to take the place of an engine on a brush pile or something of that nature.