Flying Leia - For me, it just felt silly visually. I am NOT in the camp of “Leia was never trained … so she can’t do anything!” arguments. The force is strong in her, so that’s fine and all … when it counts she was able to summon it. I just can’t get over the look of the whole thing, it feels and looks strange.
Hyperspace Kamikazi - Didn’t have a problem with that. The Raddus was a very large ship with strong shields, hull, etc. This was a last resort move that could only work under certain circumstances. Granted, I am not sure why people have such a problem with it. The last thing you would want to do is sacrifice a large strong ship unless you ABSOLUTELY had to. She by-passed all the safety mechanisms that would prevent that. Anyway, for me this was absolutely fine.
Space Chase - It would be hard to alter this … but by removing the time, be it the lines that say hours, etc, that would be MUCH better.
Miscellaneous - Alter the crawl regarding the “being open” since the FO already knew of the base towards the end. I believe there would need to be altering of Poe’s lines to Finn since he says that as well about exposing themselves. Need to re-watch that scene to recall correctly.
For Rey lifting up the rocks, remember, she is Mary Sue. 😉
The flash back idea is an interesting one if it can be done well.