You mean like when they reveal Ben Kenobi is actually Obi Wan Kenobi, a Jedi Master who was friends with Luke’s father but we only just met him?
I get what you are saying but we are dealing with Ron Howard, a close friend of George’s (whom George asked to direct the PT) and Kasden, who gave most of our beloved characters their depth we now take for granted.
This has all the fun of ANH, in my opinion. ESB, ROTJ, TFA and TLJ all have been tied down (not a bad thing) with raising the stakes over and over again and resting the fate of the galaxy on the events of the film. This time, like ANH, there was no burden. Just make a fun, sci-fi flick.