Future Hokage, Konoha, and the Hyuuga clan
Konoha could be the most protected village after they rebuild. They can place the Hyuuga clan members with Byakugan along the wall, which can see like 800 meters away. Have a sensor type run scouting missions with a Byakugan user and an anbu member and they have a great defense from outside attacks, and if someone happens to get through the ninja inside will be ready for them.
What konoha needs right now is a Hokage that is smart enough to use what they have. All the Hyuuga's do is sit around all day, how long has it been since we have seen Neji or Hinata in a good fight.
IMO this is why Shikamaru, or someone with comparable intelligence, should be Hokage. what they need is someone to best utilize their resources and make full use of the KG's they have within the village.
The only person i could see getting through this defense is Madara, with his teleportation they wouldn't even know he is coming.