Like many here my game library is approaching 500 games. With that many games the library is not overly easy to manage, or at least it has been my experience. Not without spending quite a bit of time at it. And once you purchase more games it then becomes more difficult to manually manage it.

Suggestions:
1. Make the sort by "Updated" a menu item, not a drop down from the uses number of games. it is not very intuitive to know where it is located. It could easily be listed directly to the right of the number of games.

2. There needs to be a better "marker" to indicate updated games. The little blue dot now is too easily overlooked.
Some suggestions may be:
Turn the entire background of the "name area" of listed games a different color.
Make the dot larger, blinking, or both.
Under the main Account tab add and Update choice that sorts and lists all updates (much like forum replies).

3. There needs to be a way to tell what has been update/added to an updated game. Right now the user has to click on various files to manually compare version numbers with what has already been downloaded. Updates should be called-out in some fashion.

4. There should be some information on what the update accomplished. Did the update fix bugs, make the game easier/harder, add content, etc?
There is no way of knowing what has changed and the reason for it.

Well, these are my thoughts, what say you?