Rey is Lukes kid. Finn is Lando's kid and snoke is Boba Fett. My predictions.

Kylo Ren I'm mixed about. With the mask on he was a badass. When he took it off, he was a pansy. Totally thought they casted him wrong.

I think JJ Abrams took the old movies into one with lots of throwbacks for the new younger fans. Summarizing everything from past to lead to new ones in future.