Final answer:
The Katy Perry Super Bowl halftime show could have been improved with more elaborate stage design, a guest artist or collaboration, and interactive elements.
Step-by-step explanation:
In my opinion, the Katy Perry Super Bowl halftime show would have been better with more elaborate stage design, including pyrotechnics and visual effects.
Additionally, incorporating a guest artist or a collaboration with another popular musician could have added excitement and variety to the performance. Finally, including more interactive elements, such as crowd participation or a surprise element, would have further engaged the audience.