I totally agree that the stormtrooper rebellion is a great idea, but it isn’t one that works very well in the context of a typical Star Wars film. Each film is about an event that doesn’t last very long (TESB is kind of an exception but only slightly). Such a rebellion would have been great if they had laid the foundation over three films and then done the payoff, or if they had any hint of it. But in TROS they are portrayed as those who are force sensitive, not just those of conscience. And in many ways they are slaves to the First Order and the first callback to that issue since AOTC.