It all depends on the term you use. Do you mean, that it utterly destroys everything, or just that it's attack will reach every part of the suggested region?
In fact, the Juubi's attack wont do much alone. It's the after effects created by the attack, that will do the most damage. Like the pressure wave from the explosion, earthquakes, tsunamies, dramatic changes in weather, temperature, ravines, etc.
So it depends, how much you take into the calculation as being part of the Juubi's attack, and how you define "busting" something.
Also there is no constant terms for village, countries, etc.
1. Madara said something in that manner, though that is surely over-exaggerated. Probably a smaller country like iron or grass country perhaps.
2. Again depends on the term "buster", but surely it would be able to bust up anything it hits :|
3. Perhaps to the same place, as he sent Kurama's. However, it's not even shown, that it was his doing. Could be Tobirama. Could be Hachibi. But I think it's more likely to be Minato ofc. It had to be a place, where he had a seal placed.
4. More "personality". We saw how it started to see its enemies and get kind of a personality towards Naruto, since he was the main thread against its existence. So it will also become much smarter, which is probably the most terrifying attribute for such a monster!!
5. Nope. Because a planet is just huge. It's volume is quite large, and the ground is too solid. Perhaps it could do, what a small meteor could do the earth. So it would make dramatic changes everywhere, however, even this I doubt. It could probably influence an entire continent with 1 bijudama, but not kill everything in it. It's just too much power. Even nukes can't get close to this.
6. Yes, specially since it's adopting a personality. That makes it much harder to fight.
7. Seal fast =) Nothing else can really be done against it. Imagine it with full Kurama and Hachibi power plus final form. Yikes...
8. It would be quite terrifying if it could use genjutsu, illusions, perhaps even bunshins, lol =D but I don't expect much more. Perhaps some fire jutsu, that will completely demolish any mokuton used by Hashirama =D
9. Yeah. It made this attack in the middle of nowhere. If it did it in an ocean, it could start massive chain reactions with earth quakes, tsunamies, etc..
10. I have a prediction, that Sasuke will use talk no jutsu on Madara, and he will help stopping the Juubi. This is only if Kishi wants us to see the Juubi's final form. I don't think there is any possible way, that the current shinobi can stop it in its final form. So they need to combine every possible jutsu they have,
and thus they need the rinnengan more than anything! Besides, IMO, it would be quite awesome.
Of course there is another possibility, which is, if Kakashi convinces Obito, Obito might be able to go inside the Juubi while intangible, and find one of the so6p tools, that has Kurama's chakra and remove them. That should make the Juubi collapse. But I would rather see an all out fight with Madara + Hashirama + Naruto + Sasuke vs Juubi =D
11. It's possible. I think it might not talk their language, but perhaps Kurama could understand it.
12. Not really. It's more like a mythical creature, God placed on the earth to test the humans ability to unite, drop their hatred towards each other, and after defeating it, it would lead to a more peaceful future.