You may or may not remember this thread of mine. Probably not though.
So! Let's begin.
Kabuto would have a pretty easy time of destroying Konoha assuming he would go about it with stealth, which he probably would.
He does not need the full power of Edo Tensei, as that would be overkill. All he needs are:
First those three would just need to go to the border, take out the guards very easily like Pain and Konan did, then Kabuto could force Itachi deactivate the barrier,
then Deidara could just walk in with his hood on, jump up onto a building, and then perform C0.
And before he performs C0 Kabuto could just teleport away.
And then *boom*
There would be nothing Konoha or any other village could do. Oh, and Edo Deidara would definitely not be spotted.
Itachi and, more importantly, Kisame were sitting in a tea bar, passing the time literally right in front of Kakashi, Kurenai, and Asuma. They were as suspicious as they come. On top of that, Kisame has a monstrous level of Chakra, yet nobody noticed him. A man with a hood on his head could easily jump up to a building and start performing Jutsu. Once Deidara starts C0, it's over.