I mean the kingdom tab does show all the extra cards while you're in a game, but there's no way to look up cards while you're in the game clients lobby. Sure you could google them but now you're using exterior sources. Imagine if instead of pictures the Familiar Cards section was just a list of cards that you can click a checkbox to indicate if you're familiar with the card but there's another section of the website that has all the card information. Now you're forced to go back and forth between tabs if you're unsure on the wording of a card. That's basically how it is right now with the non kingdom card piles. Why not just have all the information right there for you to look at and familiarize yourself with.