1) Lockdown was started to reduce need for ventilators. Since they don't work 66% - 90% (80% in NY) of the time, that's moot. (But Chinese papers have published that since January, so I guess we're slow learners.)
2) 98% of people who catch corona virus recover fine on their own. Of the remaining 2%, most are older, just like the flu every year.
3) The US is not S. Korea - we're not setup for testing or tracing, and won't be for months. We'll run out of food and most small businesses will be ruined for no good reason.
4) Corona virus has spread world-wide. There is no way to predict if it will come back next month or not, so let's get rolling on herd immunity.
My practical suggestions are, to use a medical metaphor, just rip the bandaid off:
1) Spend a week creating dedicated quarantine hospitals, just like Wuhan did in Dec./Jan.
2) Tell everybody to sew a mask.
3) End the lockdown after communnicating the above, and let the flu runs its course, just like every other year in human history.
I understand that it's human nature "to want to do something", but we have no cure for this.