Re: Hey everybody!
Sorry sorry I know I haven't been around so maybe my input doesn't matter or maybe you already figured this out, BUT
We could use the Incursions as the Why. Tony with his future spawn phased one of the parallel Earths to avoid an incursion, and I haven't read the latest couple New Avengers so idk yet if they've figured out this solution BUT Tony is 100% the type of guy to come up with a solution like 'why not just destroy Earth' and then just fucking do it like an asshole. So okay that was confusing, point is maybe he comes up with a way to phase our Earth out of spacetime, and it has to be evacuated because otherwise everyone would be in spacetime suspension.
Footnote: For those not bothering with the vast lunacy of Hickman's Avengers, basically parallel Earths are colliding into each other like a big Newton's Cradle and if they destroy each other this way, their whole local Universe/s is/are destroyed. So far, the 616 solution is to a) luck out or b) coldly destroy the stranger Earth. As you might have guessed, this is something of a point of contention, which could be relevant if used as a game device. We now return to your regularly scheduled programming.