I went back and looked at the comments on the Earth One announcement at The Source. Big mistake. There’s an argument over whether it’s the same as Earth-1 in the 52 Multiverse, what Earth-1, Earth-2, Earth-0, etc. all are in this universe or the previous DC Multiverse, etc.
In short, the title alone drags the new, streamlined books into the realm of continuity-heavy fanboy debates.
In general, I don’t like numbering alternate realities. It can be useful for cataloging, but it’s much clearer to refer to “the Smallville version,” “Mainstream DC,” “Ultimate Marvel” or “Tangent Universe” instead of tossing around terms like “Earth-616” and “Universe Designate Zero.”
And isn’t the point of this new line to make things less confusing?
DC needs a banner they can put on these books, so that readers can look for “XYZ Superman Volume 1” on the shelf. But “Earth One” is already causing confusion, just hours after it was announced.