Monographs are increasingly making the print-to-digital shift that journals started twenty years ago, but many online platforms for monographs arguably do not take full advantage of the digital environment. In October 2016, JSTOR Labs, an experimental platform development group at JSTOR, convened a group of scholars, librarians, and publishers to unpack the design issues around the presentation of digital monographs. The group proposed a set of principles for reimagining the presentation of monographs in order to improve the user experience and increase the value of ebooks to scholars and students. This talk introduces these principles, which are also outlined in a white paper, and addresses discovery, evaluation, and interoperability challenges of the current scholarly ebook landscape. The presentation includes a demonstration of a new, open-source prototype that the JSTOR Labs group has designed: a topic-based navigational aid for monographs called "Topicgraph," and a deep dive into the topic modeling and natural language processing tools that power it. Last, the presentation included audience-participation voting on four potential follow-on projects. These slides show the results of that voting.