They specifically
Man, if the only the developers had recently answered a bunch of questions about that very subject.
Much in the same way they don’t have too many servers to avoid dead servers in the future, Blizzard doesn’t want to have too many people on one server because the more people they have, the harder it will be to compress to one layer before Phase 2.
I’d also like to note that its pretty great that for three months this forum was screaming “NO LAYERING NO LAYERING” and now its “MORE LAYERS MORE LAYERS MORE LAYERS CAUSE WE’RE IDIOTS WHO DON’T UNDERSTAND WHAT LAYERING IS”