I got fed up with my Playstation 4 because of its frustrating UI. I wanted to use it for viewing TV shows with Plex, browsing YouTube videos and playing some games with friends (co-op). However, for starting Plex or YouTube I had to hit like 8+ buttons to start the app. You can't even pin the app to the main menu.
I replaced the PS4 with a HTPC connected to my TV. Using keyboard and mouse to navigate in Windows is painful when sitting on the couch.
Then I found Steam Big Picture mode. It kinda replicates the PS4 UI, but somewhat better. I still found I had to navigate way too much. Furthermore, using Plex and YouTube was even more of a pain than with PS4.
So I built my own big picture mode.
-TODO cool gif-
Note that this is still in early stages, but if you are interested and want to share your ideas, please create a ticket.
Built by Kees Kluskens
Icon: "Television" by Piero Borgo from the Noun Project