5 stars rating sucks.

• Check if readers mark their readings as "favorite"
• What they enjoyed with this book. Every quality a reader chooses gets added to traits others have chosen.
• Add a "wished" list: users would mention what they would have liked to find in it
• The users are prompted to share their thoughts and receive suggestions to hone their feedback. The suggestions range dynamically, depending on a reader’s earlier choices.

Generating trust, meaningful usage of time, and clarity among users builds a safer environment for genuine conversation to spread, so comments should be protected from elements that detract from them.

and what readers can do today?. Write a review in 5 points (extracted from a book review):

• Explain why you chose your rating.
• List common qualities you enjoyed. Even better, write a sentence to say why you enjoyed specific qualities.
• Discuss a point (or several) that you found important.
• Mention what you wish you had known before.
• link to other that you think you best sum up your perspective.