The time obviously needs to be updated differently than every half hour which is the standard tile update interval. Hopefully that will come with Nokia backing. Right now I need 2 different apps with tile updates to see the battery status and the weather. TimeMe, regardless of whether Nokia backs it or not, gives me both battery and weather updates in one app with one live tile which "I" find useful -
with the addition of time and date I get quite a bit of info and updates in "one" place. But like with all apps, it is up to the user to determine how they want to view and see content on their device - user preference.