So, if you left TFA thinking “it really seems like they want to hint that Rey’s parents were Kenobis of some sort” you weren’t wrong. That was initially on the table.

https://twitter.com/starwarstuff/status/1303652748223754240

Then Rian Johnson made the case for Rey Nobody really strongly and everyone liked that, and they did that for The Last Jedi. And then Trevorrow’s script got junked, they asked Abrams back, and he decided Rey was REALLY a Palpatine, only to waffle on that throughout production, and then ultimately decide fairly late in the game that she was.

Everyone on the twitters and the forums and all the usual fandom places seem to think this is proof positive that YOU NEED A PLAN (you don’t) but I don’t know. The takeaway here seems to be that if you want to double back on an idea, you better have good answers and a clear vision for how you want to do it. Because if you don’t, it’s not going to work well. Johnson had a pretty strong, clear idea for not pursuing Abrams’ initial “Rey Kenobi” idea (if he even knew that was the idea), but Abrams didn’t have any sort of clear idea for why he was doing anything he was doing, as evidenced by the fact he couldn’t even decide on WHAT it was he wanted to do until deep into production.