there's potential for quite a stupidity here...
the sharingan can control kyuubi (strongest of the beasts) but not nescerly the rest of them, it's explained by the fact that both the kyuubi and the sharingan origin in the fire country, but then we learn that the 1st divided all the demons between the lands to end the ninja wars.
and it just happens to be that Naruto's only means to equal to Sasuke is his greatest weakness against him, perfect, more sharingan shananigans.

I don't see any reason why the other demons couldn't be controled, the fact the jicurichii (I couldn't spell it then, why should i be able to spell it months after they wasted the acr?) exist in other contries as well is proof enough.

sure, it's possible that Kisame didn't know Zabuza, and that they became missing nins on completly diffrent terms, and that some of swordsman are still in the village. it's possible, but I don't find it likely. it's like saying that the dynamic duo never met, and that the sound four aren't nescerly working together, and that the seven dragons\seal (x1999) don't know each other.