So here's my UI design - question is whether this will display on the controller, TV or both.
The idea is similar to previous Nintendo UI designs - each app or game is represented by each of these windows. The idea is you wipe left and right to select an application. Tapping on the NN logo will bring up an entirely new screen overlaid on top, which will show you all your current NN connectivities and accounts etc. for easy sign-in/out to different accounts, management of friends, requests, data, stats and of course, game connectivity between friends, including video chat and messaging services.
At the top right you can see 3 icons - Browser, purchases/currently downloading software (which will glow a steady blue if something is downloading) and settings, respectively.
The idea for the UI was to keep it simple, elegant and easy to use. By reducing the number of steps it took to get to different apps and elements of the design, users can enjoy increased fluidity between actions.
Games/apps can be downloading whilst you play, and you will receive a notification upon completion. Increased RAM also means you will be able to refer back to the home screen a la 3DS/iOS, to launch the browser, other non demanding apps or check the NN network.
The idea is for this to act as an unobtrusive 'hub' rather than a dedicated menu. Ease of use and accessibility are a must to fit in with the controller's concept of keeping game elements away from the big screen.
Comments and criticism welcome, and sorry about the horrible compression artefacts imgur threw at me.