The full name is "severe acute respiratory syndrome coronavirus 2".
It is not mild, nor has it ever been. They don't call it MARS-CoV-2. It would be a very confusing name anyways because we live on Earth, not Mars, btw. And I don't think the Martians would appreciate being unluckily associated with this virus.
It would have been interesting to see the mRNA vaccine arrive two decades earlier. It unlocks so much new medicine and we underfunded it until COVID sparked wartime funding.
That's so many lives destroyed from 2003-2022 who could have cheaply lived if SARS-CoV-1 took off like SARS-CoV-2.