Unless I missed it, but it would be nice to be able to filter by games you currently have installed, as an option. Because there are games that I own that I purchased a long time ago and I have no interest in that game anymore, so don't need to see it appear, again would be nice to be able to filter to see DLC for the games I currently have installed and are interested in.

Lastly, it would be nice to have a section on DLC that are currently on Sale, which would increase my likelihood of purchasing the DLC.

Great idea, hope it's expanded upon and released once it justifies it's existence. Thanks.