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Not everyone liked Mortis, and Krayt's appearance mucks up the timeline unnecessarily. Its frustrating because they're handling things without considering consequences. Something that no one acknowledges from the Denning interview is that it IS being considered that Legacy might not be canon, that it might just be one possible future. I dislike how cavalier this novel felt towards that. Also, the Mortis stuff was literally tossed in at the last minute and it beyond shows. After 9 books with no reveal about Abeloth its suddenly, in the last half of the book, revealed that she's a being from the Mortis family. Didn't work for me or in fact a lot of people.
Perfection is a lifelong pursuit requiring sacrifice. The only way to get it quicker is to sacrifice the most.