I know it will never happen, but I would really like them to accept that they fucked up RoS and go back and give it another go as a series, which will likely be cheaper than a movie.

Keep TFA and TLJ because for all their flaws they are consistent. Just pretend RoS didn't happen and try again. Make it a series and call it an alternative timeline, or "What If..." Or whatever. Just finish the trilogy properly.