I would argue that a weather app is really not needed, especially since they tend to display very little current information. If you want to see the weather on an ATV then turn on a weather TV channel and get up to date, live information. Besides, would you really want to have to back out of a streaming app just to see outdated weather stats? If the ATV could toggle a weather screen temporarily in front of the currently running app, then that wouldn't be so bad. But having to close one app, open the weather app, close the weather app, then reopen the original app you were watching would be a royal PITA, not to mention time consuming. Personally I would just pick up my iPhone or iPad and look up the weather on them rather than using a clunky interface like tvOS. And since darn near every device has a clock displayed these days, I really don't see the need for a clock app either, unless it could be momentarily toggled on top of the currently running app. I can already see three clock displays on various devices within the same room as my TV.