>>21494960Going to try to keep the game's overall "themes". Just a really rough idea, probably doesn't make 100% sense.
In accordance with the life/death theme of Xerneas/Yveltal, I would've liked it if we could see this in the region itself, with one side being full of rich people and lush environments and one side being where all the poor people live alongside "crappier" environments like swamps.
Integrate this with Lysandre's story. We visit a town on the poor side of the region early on in the story, and the NPCs there talk about how much Lysandre used to help them, and now they barely see him anymore.
You meet Sycamore/Lysandre in basically the same way and Lysandre goes through the same spiel of how there are people who only take in this world and they should be eliminated. Lysandre states his goal is to bring beauty to the whole of Kalos instead of just one side.
Diantha is an actress that spends all her time on the good side of Kalos so she's ignorant of all the bad things that can go on in it, which is why she doesn't understand Lysandre's vision.
Each time you meet Team Flare they're trying to get something to further their plan. When you meet the admins at the power plant/pokeball factory etc you'll see them getting new members in by charging them lots of money. When you battle them one of them will mention that since the boss has left the details of execution to them, they can be as ruthless as they want.
End of the Team Flare plot is basically the same, with Lysandre saying he needs to reduce the number of living things to bring beauty to Kalos. Diantha also helps you stop him, but by now she's seen more of Kalos and reflects upon what mistakes made Lysandre into who he was.
AZ would probably have more or less the same role.
That and the usual things people mention, higher difficulty, less intrusive rivals/friends etc.