> The biggest problem with Covid is that it spreads -before- people have symptoms. Flu spreads when and after, but not before. An Omicron "improved" to kill peo

> The biggest problem with Covid is that it spreads -before- people have symptoms. Flu spreads when and after, but not before. An Omicron "improved" to kill people in a few days would still travel perfectly. If that happens then society as a whole would react to it more strongly and it would thus spread slower. That's a natural selective force.