Read reviews for games you're looking at buying? Star ratings is all I've found, but they sold this as an entertainment hub and touted how it's all integrated.
What's the point of all the flashy store interface if it's lacking what has become a critically important part of the buying process for most people?
Hmm. There are mobile apps for iOS, Android and Windows that allow you to browse store. The store is also online via the web and the Xbox includes edge browser so you can search the web for game reviews..
The latest dashboard updates feature a few reviews, but lets be honest - hard problem to solve on console since providing feedback for apps is better done on a tablet/PC/laptop than with a controller.
What's the point of all the flashy store interface if it's lacking what has become a critically important part of the buying process for most people?