Doubt that there will be substantially more germaphobes and people running around with masks in public after this wave is over.
But I do think an increased rate/acceptance of telecommuting will stay, along with advancements in technology to make it work more smoothly.
Also, I have hopes that there will be a mind shift among large parts of the population that might make the world a better place years down the road. Now that they're - at least partially - torn out of the work nuthouse and also cannot distract themselves with social gatherings, sitting around and having plenty of time to kill, there is a chance they'll use the time to think about their world view, their behavior, and the way the world is governed. Perhaps finding a new stance regarding "growth is infinite" capitalism and mindless consumerism. Also perhaps a shift of personal values back to family and your nation.
(I know, this might sound a bit stupid coming from a guy that is into gambling, but hey, nobody's perfect, and realizing issues is the first step towards solving them.)