1) the black cat shows deja vu, aka the matrix being rewritten. The Oracle and the Architect are talking about the fact that the Oracle made a very ballsy move by trying to get Neo to save humanity by co-existence, and the Oracle makes sure that this time it's different.
2) No, i do not think Neo is dead, i think he has transcended, and he is still alive. After all, his body, although it looks dead, is glowing a bright color.
3) Sati is more powerful than any other program because of what she is; the product of love between two programs.
4) i donot know.
5) His mind was placed there, assumably by Mero.
6) see above.
7) It would require more energy than they could get from the sun.
8) i don't know, i would have to go back and watch it again
9) yes
10) i do not think so, i think Architect made smith, "to balance the equation"