Realistically, I think a Meteor 2.0 would be a lot more front-end agnostic, meaning no Minimongo, DDP, etc. And Apollo would be the recommended solution. That does mean no automatic optimistic UI, store updates, etc. out of the box.
I also think Meteor will have a hard time competing with things like Next.js unless it implements key features like hot module reloading and SSR. They might not be that important in the grand scheme of things, but they are very visible to any new developer (while some of Meteor’s more “hidden” advantages are not).