Final answer:
To increase the occupant load of a space, one must ensure safety features are upgraded accordingly to accommodate the additional people, much like HighFlyer Airlines' consideration of redesigning airplanes for increased cabin space.
Step-by-step explanation:
When increasing the occupant load of a space above that determined by the load factor, it is mandatory to ensure the safety and comfort of the space remains uncompromised. This means evaluating and, if necessary, upgrading aspects such as emergency exits, egress pathways, HVAC systems, and other safety features to handle the additional occupants. In the context of the given scenarios, HighFlyer Airlines is considering redesigning their airplanes to increase cabin space, which implicates reviewing and potentially modifying numerous factors including engine placement and overall aerodynamics to maintain operational efficiency and passenger safety.