It made me like Palpatine much more, though, as at first I thought he was a disgrace to the Rule of Two by killing his master in his sleep. Now it is much more evident that Plagueis needed to die, and that Palpatine was far more powerful and smart anyway.
Didn't really need a book to tell you that, but I think a lot of people took the whole "killing his master in his sleep" out of context and so the book cleared that up but ya Palpatine was far more powerful and smart which really is evident by(without reading the book).
1. He found out where his master slept, so already Plagueis failed at hiding and keeping secrets.
2. He couldn't sense his apprentice's intentions, which force sense is a very basic force ability if he couldn't even do that he deserved to die.