My idea for a possible new POI is "Retail Unit" with a big and small version like we already have for supermarkets. These would be good additions for areas with many shops such as high-streets and retail parks.
There could be a number of missions available for these such as retail unit fire (with a possible major incident version), anti social behaviour/drunk and disorderly, lost child, shoplifting, assault on security guard, security alarm activation...and any more that anyone can think of