Yeah, I don't think this is an approach we could take because laymen would try it. But as a thought experiment I don't think this is mutually exclusive with flattening the curve.

If you could guarantee a group of people would be part of the mild cold symptoms (~80%), it would be nice to have them get it, isolate and monitor, and let their bodies develop the immunity.

They would no longer be able to spread it to more vulnerable people.

It's just like a vaccine, but riskier.

But beyond all that, I now remember there's evidence the virus might be doing permanent damage.

So definitely don't do this. Even if you could quarantine for 10 weeks or whatever.