I will re-post here, better than in "Jedi" Rey HT Figure topic
I would prefer to think if Rey turns out to be Jaina Solo or her long lost sister or who whoever related to "Solo", it would just make more sense than a "Skywalker" or a "Obiwan". Of course Rey will inherit all her the amazing abilities, except for the...beauty.
Final TLJ scene when Rey and Kylo are bangging.. immese dark power of Snoke will twisted Rey mind and reveal her fate as a " chosen Solo", and Kylo is actually her brother. Driven mad by incest act, she felt to the sidious trap of Snoke and kill Kylo, end his pathetic emo life - which serve as the dark ritual step to fully consumed by dark side by sacrifce someone who close to you and has powerful connection with the Force (similar when Paplatine sacrificed his apprentice - Count Dooku to Anakin and manipulated the young Jedi Knight). This was also applied in Ep6, when the Emperor lured Luke to *** Vader.
This will explain why Kylo could never go full evil, he killed Han Solo, his own father - but the guy has absolutely 0 business to the Force, so..... (Anakin wiped entire Jedi temple to meet this "Sith" requirement).
Perfect plot for twisted Sequels..and it does make sense...for everything...oh yeah