I like the idea of a speed-style queue being generated, however some people may need more time to process what is going on whether it is reading or getting a feel for what is being shown. My suggestion would be to keep a running list on (what is currently) the right-hand side of all the games being shown. This way it makes it easy to go back and check out the store page.

I like the idea of the pop-up with multiple tabs as well instead of having to navigate through the main steam interface in the event I want to look at more than one game in greater detail. This is coming from a PC perspective and I'm not sure how that would affect console/big screen mode.