On that front...
I've been going through ideas for The First Order for my ST rewrite and I've been thinking of cooler ideas for its head instead of just using Thrawn or reinventing Snoke (the latter because a major inspiration for my rewrite already did that and I figured I'd go crazy instead of treading new ground). A possible idea, which could blend in with other ideas, is that the First Order pulled a Boys from Brazil and cloned an "heir" for Palpatine. Just to make it clear, it's not Palpatine, it's essentially his son who the First Order treats as it's Prince. Now I've got a couple of idea percolating with which to add to that base but is that idea cool or eye rolling at it's base?
I've toyed with the idea of Princess Rey myself, at least her being forced into it by a brief but 9/10th's rocky, 1/10 Heartwarming or as close to you get to it relationship, with Evil Granddaddy PTSD-afflicted and emotional wreck Palpatine.
With a 'Imperial Prince' chances are your going to run into some issues. Their going to be far more vulnerable powerbase wise, their not a decades old seasoned politician even taking into account the sociopathy and ability to wield the force of Palpatine. Second their Empire may or may not have to denounce the actions of their predecessor, even if it is just for PR, remember the Empire has
several actual genocides to their name even outside of Alderaan, how do you 'realistically' drum for such a state is going to be an issue considering the Empire was as pointlessly evil as you could get and when out of their way to do horrible things than function as a state.
Next up force user training, are they going to be trained as Sith, with possibly all of the downsides that come from it, especially if they are not given much in the way of some of the more politically oriented Sith of old. Are they going to go down some crazy paths with their training, also who is their teacher and are they still around. There's stuff to work with, as far this idea goes, but there's also a lot to consider. It's not even a stupid idea, since the FO could have been decent antagonists if they written better, and given coherency, and not shafted for Palpatine's cult.