I won't be surprised at all if a safe, effective vaccine is developed for SARS-CoV-2 and I further wouldn't be surprised if newer vaccine development methods also make it affordable to attack the occasional longstanding cold virus.
If/when we have another, more damaging pandemic, I expect the lesson about how powerful a tool social distancing is to sink in more widely (we are somewhat accidentally having a mild flu season so far; just changing attitudes about what is appropriate when symptomatic would be a benefit, you don't need to do big lockdowns to benefit).