That would be a pretty good way to introduce mutants. The only downside I'd see is it would be because of the Thanos snap rather than "evolution" which, I think is the foundation of the idea of "Mutants" in the Marvel Universe - and keeps that door open for Magneto to be all, "We're Homo Sapiens, the next evolution of human kind - and soon Homo Sapiens will be the servants and slaves to the world of Homo Superior!"

With Northstar showing up saying, "We don't like the derogatory word of 'homo.'"