I've been using a Roku Ultra for a couple of years ago and use the fish tank screen saver. The only thing bad about that saver, besides the eel not gulping down an occasional passing morsel, is that it doesn't include the current time anywhere.
It would be cool if you morphed the coral reef (maybe the stick like piece near the middle) during the sweep to show the current time. Even if it was only updated every 5 minutes, that would be great.
Alternately, you could add a timestamp somewhere innocuous but easily found.
Either way, that would be a big help. This is such a nice screen saver, I leave the TV on with that running almost constantly. Almost like a real fish tank without the need for a toilet burial.
Harry