Wait, wait wait, Couriway's train isn't connected to the Kiloude-Lumiose line? Haven't played the games yet, was assuming that was the case. Huh.
And the map cloud thing, I'm more interested in the northeast of the region, beyond Terminus cave. That's a huge area not accessed, but hidden. The rest of South Kalos would be nice though, not gonna lie, if there is more. But that top right corner, that has to be connected to Alexa's editor.