Like people have stated elsewhere, it's main advantage is the fast switching.

But ...

Usually the first thing I do on a store page is checking:

• tags
  
• screenshots
  
• if the "not recommended" reviews are less than 10% of the total.
  
• discussions to look some key words

So basically for every suggestion I've right-clicked open the store page and checked it. So the fast switch isn't that useful in the end.

Worse: at some point I wanted to check the discussions about some key word and it popped on the main window instead of the tab.
When I tried to navigate back, the queue was reset and contained new products. I had to navigate a bit more to find the game back and put it on ignore.

I don't want to use this.

I'd suggest to focus on the fast switching (faster shop servers, lighter HTML code, ...) and keep most of the suggestion queue like it is right now.