Those are very fascinating points Rogue, very interesting. Both for motivational reasons, but also a clearer plot. It was confusing regarding the Emperor’s motives. It was first “Kill Rey” to “Nah, I wanted you here.” Granted, one could argue Palps was making multiple contingency plans since … well, the ultimate goal is to having someone strike him down to move on … so who cares?
Anyway, the idea above is fascinating and if it could be done seamlessly would be a neat idea to pursue. We do have an example of line manipulation that worked well with Hal’s TFA Restructured with Finn, it was done perfectly!