OSCAR ISAAC - Where you've seen him: Inside Llewyn Davis, Robin Hood. This choice excites me for two reasons. First and foremost, his performance in Inside Llewyn Davis is fantastic. The guy has some range and is a pretty talented, solid choice. But he's also beautiful to look upon. Will he be a brash hero like Han Solo? Maybe even offspring of Han and Leia? Time will tell. Just don't make this beautiful man be a villain.
DAISY RIDLEY - Where you've seen her: Nowhere! Is it just me or is this girl a complete unknown? She must have beaten out quite the competition, so hopefully she's got the chops for this role. She's certainly got the look. I could see her being related to Natalie Portman and Carrie Fisher of her prime, so I'm gonna guess she's Han & Leia's daughter?
JOHN BOYEGA - Where you've seen him: Attack the Block. I have not seen this movie, but I have been assured by fellow film friends that it is good, and he is good in it. I'll edit this post later this week when I've seen it for myself and can confirm that. As for the character.... I'm guessing Daisy's love interest and/or Lando's son?