I was having trouble understanding the dimensional dialogue. If the multiverse is dead then there are not any other dimension than Battleworld. Then I read this in Breevort's tumblr:
Q: Why is Ultimate End talking about Dimensional rifts? There aren't any other dimensions, just Battleworld, it didn't make any sense to me.
A: There aren’t any other planets, but there are at least four dimensions, including time. And if you create a dimensional rift, then suddenly you get two separate Manhattans existing atop one another, rather than side-by-side or in different sections of Battleworld.
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So what I understand is that 616 y 1610 were different domains, like all the others in Battleworld, but reality has folded on top or itself, as 616 Tony says, so now both domains are now occupying the same space. The question is: why has reality folded? What will Doom do to solve this? Anyway, I didn't like the issue.