This was never going to be an easy book to write. The idea is great—a novella for each of the starting characters in the new edition. Then tie them all together into one over-arching story. And the price of the collected novels makes this well worth a look.
There's a lot of good here. Characterisation, storyline, plot, writing, nuance.
So why not 5 stars?
The starter characters are designed to appeal to different people. The ninja, the mage, the tank and so forth. But it also means that some of them may not be your cup of tea. Someone who enjoys playing a sneaky ninja may not want to read a whole novella about a huge troll.
The writers have *really* tried. The "huge troll" has an interesting back-story that makes him more than just a "HULK SMASH!" character.
I still recommend it, but if you really only like to play one kind of character, you might be better off reading that part of the novel and skipping to the final chapter where everyone comes together to conclude the story.