The Twins are getting into Star Wars, especially Twin B, and we've watched Episode IV and V together recently, as well he's been watching all the Clone Wars shows. As a kid I watched and enjoyed all the movies with a child's acceptance, but now as an adult I watch them and thought pop in my head.
1. Why are TIE fighters the primary ship of the Empire? I mean, you just went through a long painful war a decade or so back that demonstrated that cheap and plentiful (droids) are hard pressed when confronted with more capable but less numerous opponents (Clone Troopers) so why would you scale back your Imperial Fleet's main fighter with fragile and under-gunned fighters? Especially when the rebels start showing up with more powerful X-Wings that have more lasers, shields, and can travel through hyperspace? I realize that we eventually see TIE Inteceptors and Defenders (especially in games and spin off material) but in the episodes IV and V they are the only ones we see besides a brief cameo by TIE bombers.
2. Who is backing the rebels? And Why? The movies don't get into it because we can tell from moment one in episode IV that the Empire are the baddies, but as an adult I wonder at the overall goals of the rebellion and who is providing them with resources to fight the Empire.
3. Droids are enslaved. Look, they appear for all intents and purposes to be sentient, have feelings and loyalties, believe in the Creator, fear death, form bonds... yet they are treated like property in the Star Wars universe. Found a droid? Let's knock him out and sell him to a farm to work in the fields. Claims he belongs to someone else? Wipe his memory, he belongs to us now. And the salvery is so ingrained in all the biological races that they don't even see it in themselves. We love our droids, but give them free choice? Hahahahaha why would we do that?
4. The Death Star was a colossal failure, yet they decided to build a second one? The Emperor really has issues. The amount of resources could have built another fleet of Star Destroyers to hunt the rebels down with.
5. Blowing up a planet seems like overkill, why not just bomb the surface to dust? Again, Emperor Palpatine has issues.