Ricin: I think this is for Hank.
Hank: he'll stay persistent, like he always does. In the end, his lack of evidence will be his downfall. He might be able to pull strings for a raid, but that will turn up nothing. No large sums of money, no drugs and no lab/chemicals. Hank will probably have to take time off or retire. They'll label him with PTSD, call him crazy. Hank will more than likely run Walt off, either knowingly or unknowingly. In the end, Walt will come back to kill Hank to get his family back.
Jesse: he will continue on his downward, annoying spiral. He can't stomach all he's done and lost. Money is of no value to him anymore. He will build up his frustrations and blame Walt. He'll die by suicide or by Walt's doing.
Saul: will continue to be crooked. Nothing happens to him.
Sky: I think she'll be lost. She will be confused as to how she should feel. I think that she will be fooled by Walt's "death", and will be mad/shocked/sad that he's still alive.
Walt: he will have to fake his own death. It's the only way to get away after all this shit. Even though Hank couldn't get direct evidence, the word on the street is that Walt was the legendary Heisenberg. His home will he the spot all the kids hang, because it's cool. When he comes back, he shocks Carol. She's been thought he was dead. Walt will get that ricin and poison Hank, making it clean and "accidental". In the beginning, something was said about moving to Europe. So, I think Walt will take his family to Europe, with Sky's sister joining as well. Walter White will live on, freely, enjoying his money and family in Europe until he dies of cancer.
