I can foresee that one of the consequences of the pandemic will be a permanent change in the way that society views transmissible diseases. Prior to March, it was okay to gather in large groups and just get sick a few times a year. After the pandemic, I’m not sure people will be okay with that anymore.
Hopefully we can agree that years where we lose 100,000 people from influenza are tragic, even if we've become accustomed to it. The optimistic possible outcome from this pandemic is maybe that rapid, inexpensive in-home testing for common virus infections becomes widespread. That'd allow a responsible person to test themselves before they went to a sporting event.
It'd also be wonderful if we invested more in a universal influenza vaccination. That's been right around the corner for decades now.