An extremely mild disease that makes people die of hypoxia? Since you're an expert, how would you recommend treating the blood to keep these patients alive?
Most people don't even have symptoms! In Italy—at least according to the government—you have a higher chance of getting hit by a meteorite than not dying from COVID, unless you live in Lombardy, are over 60 years old, and have 2-3 preexisting conditions.
I know that people die, and even 1 person dying is a tragedy, but if you compare with Spanish flu, Polio, Ebola, AIDS it _is_ an extremely mild virus.
As for being an expert, I never claimed to be. I didn't know you needed a degree to post on a forum. If you're asking for a recommendation, I would recommend plasma. We are having great success in Italy, with 2 hospitals in Modena and Verona completely erasing deaths.