I just finished it. It was better than a lot of LotF and renewed my faith in the EU. It was really nice to see a book focus on Han and Leia again. Its been since what, Tattooine Ghost? But yeah, decent book. Not the greatest of endings. Simply wasn't impressed with that, but its serving as a nice lead in to FotJ Outcast. I'm really excited for that now.
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Seff claiming that Master Skywalker 'doesn't understand' is a good foreshadowing. It could be he suffers from the same thing that Valin is reported to in Outcast. Who knows, but I have a feeling that this series is still going to be fairly 'Jacen-oriented' because Han is just now starting to show signs of pain at his loss. Jaina and Jag, all of that is referenced in this book. Great idea, poor finish, and good intro to the new series.
Perfection is a lifelong pursuit requiring sacrifice. The only way to get it quicker is to sacrifice the most.