Star ratings definitely affect our decision about whether or not to feature your book. But you can change that. For instance, if you have low ratings that say you have a lot of typos, you can have your book edited again and then post on the description that the book has been recently re-edited. Also, you can reply to the people who posted the review to thank them and let them know the errors have been fixed. Then, have your friends and family vote not helpful on those reviews and helpful on the ones that focus on the good qualities of your book. (Of course, you should do this only if you actually did proof the book again, or reviewers will keep posting about the typos). The same thing could be done for other book issues.
Or just submit one of your other books! We'd love to promote you, but we also need to be loyal to our subscribers and unfortunately that means using reviews as one of the methods to approve books. Keep in mind that it isn't the only method. We do look thoroughly at each book.