>>58097487
>for some godforsaken reason
Muh Lysandre

Joking aside, I can't think of another reason. They just wanted to reuse Lysandre. As one anon said, "I still hold out hope that the plot revolves around time travel." That would explain the limited locations. They would reuse Lumiose, but in different historical periods.

I know it's unrealistic, but you have to hold on to something, otherwise it'll just be a boring Detective Pikachu with battles.