Ultimately, most of the measures in place are not because the virus is debilitating, but simply to stop it spreading. This is key, and really, when it reaches a certain threshold or saturation point, it will surely become more effective to simply isolate the vulnerable groups and let everyone else carry on as normal.
If the virus was debilitating for a high proportion of victims it would be another story entirely, but it isnt. For most people it will be a mild to moderate illness. As someone who came back from Northern Italy just before this all kicked off, the massive concern for me at the time wasnt my own health but to avoid spreading it - especially to anyone vulnerable. I think we are close to reaching a point where it is simpler and more effective for the country to simply say anyone elderly, or with respiratory conditions, or otherwise vulnerable - stay inside and isolate, and everyone else crack on and keep the country running closer to "normal".
Based on the amount of asymptomatic cases, I think this would be more effective, myself.