Nothing.
Series like Wheel of Time should just be mentioned in a footnote of an ebook on terrible mistakes genre authors made and otherwise consigned to oblivion.
As a WoT fan sure it was disappointing how it had rather little new information, but... It's an encyclopedia. "World building" isn't really it's job.
Could of done with more One Power info though. For all of the OP being a huge part of WoT, the thing barely even covered the very basics.