I feel like Kylo Ren does a really great job of combining Darth Vader's aesthetic with pre-Vader Anakin's pubescent whininess, seemingly without any of the competence or likeable attributes of either version of the character. Personally I kind of loved all the parts where he was tantrumming about and all the other characters looked sort of uncomfortable and embarrassed for him. So fucking funny.
Of course, the best part of the movie is how they brought Jar Jar back to be the protagonist of the new trilogy, and that those other "main characters" in the trailer were just decoys for the real MVP.