Share your requests for new features, channels, etc. with the Roku team! Search keywords and add a kudo to an existing topic to show your support, or create a new topic if your suggestion isn't listed.
I completely agree that the theme packs are what sets Roku apart from the competition but if you look you will see that the theme packs have basically been static for 6 months or more. There are wallpapers offered occasionally but they are quickly taken away with no explanation as to why they cannot be permanent. In the 10.5 tips and tricks update Roku even mentioned the updated themes but their valued customers know that there are no updates to any of the existing themes and those existing things are far too few.