They just abandoned so much of what happened to Stan, Philip, Elizabeth in earlier seasons -- Stan needed to know that Philip Killed AMador, and that he (Stan) had shot Elizabeth. And he investigated so many of their operations. I did not expect the finale to cove it all, but really thought Stan would be in a position to find out more in interrogation. And I really thought there would be a shred of hope for Oleg. I am not a bit worried about Henry or Paige. Stan will certainly take care of Henry, and Paige deserves whatever.
Philip and Elizabeth can certainly call Henry and Paige from Russia -- they just can't go back to the U.S. or countries that would extradite them.
Honestly, Paige does not know much at all -- just learned how to do surveillance, and learned bits and pieces of the fairy tales of politics that Elizabeth told her.
At least Henry does not know his parents actually were murderers.
Stavos! Will he find out the truth? The travel agency is certainly done; all records carted off by the FBI by the time everyone shows up for work the next day.