I actually said that to a mate that it would be so funny if R1 was just the first level of Dark Forces gameplay and after 5 mins everybode just went home...
EDIT and more on topic:
I think the biggest mistake of the ST is not utilizing the characters enough. TFA was what it was but there was a lot to springboard from in terms of taking the characters in interesting directions. Then in TLJ almost everyone is a different character. Finn's natural direction of character development could have been the fact that he stood up to the evil regime at the end of TFA, how does it reflect on his old First Order comrades, are there more like him, etc. Plus his injury could have been developed into something interesting.
Poe...well, it's been talked to death. I never got the feeling in TFA that he was a bull headed reckless moron who just wants to blow things up. When he crashes the TIE on Jakku the first thing he does is report back to HQ instead of going rogue and trying to find BB8 or Finn. By the book.
Kylo was interesting, not sure there was a lot left to play with him at the end of TLJ though.
Rey...well, she at least had some themes but I dunno...I get the theme of failure but she doesn't seem to get much out of it...
I'm gonna say it, TLJ spends waaaaay too much time on Luke. As much as I love Mark Hamill and his performance (not the character in TLJ itself) spending that much time on him and going nowhere did not allow the new guys to develop organically and in an interesting way. Dagobah was a place where Luke is developed and expanded. Not Yoda...
Then TROS just hits a reset button on tons of stuff again while basically nullifying Finn and Poe while lot of new change stuff came right out of left field.
Shame. Corporate moneygrab, committee or whatever, there was potential in this and it just got muddled.
I just watched Jenny Nicholson's video on Colin Trevorrow's Ep9 script...I don't know if it's comforting to know that nobody had any interesting or satisfying ways of wrapping up this trilogy. If you want some hysterical stuff check her video on the Alan Dean Foster treatment, my god...
The only one who I think had a decent fanfic idea (and I'm not into fancfic) was Thor Skywalker with his Ep8 treatment. He took quite an amount of the kernels from TFA and managed to develop them organically even if it's not a perfect story.