Regarding the Holdo hyperspace ram and the new hyperspace tracking, maybe these could be tied together. I like the earlier suggestion that hyperspace tracking requires something hyperspatial on the tracking ship (rather than the tracked one), but maybe that could become the weakness that the Raddus uses to attack it directly. Perhaps as Holdo prepares the attack, we could cut to a Raddus screen with some imagery making it clear that it’s locked on to the FO ship’s hyperspace tracker. Perhaps even with a further shot of the tracker itself, just to hammer it home. That would neatly explain why this technique hasn’t been used elsewhere, when it seems like such a powerful but accessible weapon.