Haven't read any other star wars book so I don't know much but Revan isn't shown enough in the book after he gets captured. The cover of the newer editions show him having a cool looking battle with nyriss but in the book he just ends up zappin her and completly obliterating her.
I liked the ending but it could have been better. Hes holding the emperer off from his mind untill his son can beat him or at least live a full life but there is no sequel. Just an epilogue. I heard this was the best book in the series but im starting to doubt that. It was still good though.