We only need to build on this unity and make it worldwide and permanent.world peace and unity can not be stopped because we are all connected. We are all one.
This is a wonderful breather away from the doom and gloom and offers a glimpse of hope and confidence that we will always overcome whatever obstacles we may face.
I'd like to see it go the other way. We are too interconnected.
'World unity' is impossible as diversity is a natural aspect of human social evolution, and so attempts to achieve it are actively harmful and counterproductive. We don't need unity, just peaceful coexistence, and trying to force everyone into some kind of common unit breeds resentment.
Just like how many people get on far better with their families when they don't live in the same house, it's much easier to live and let live when the beliefs of others aren't in competition with your own beliefs.
What the current crisis has shown is the fragility of the highly optimised global supply chain. Optimisation is terrible in times of crisis as there is no inbuilt redundancy in the system.
We see it with masks now, but it could happen with food in the future.
Countries should identify a range of core necessities and aim to control their supply of these; plan for a worst case scenario, don't optimise for normality.
It also benefits the local economy, with fewer jobs being offshored. I doubt it will happen though as people lack the will to 'overpay' for these 'inefficient' methods when times are good, and simply assume the worst case will never happen.
This is not to advocate for autarky, just a far more localised system complemented by global trade in non-essentials.