Out of bounds will never happen because there's no geography for players to interact with. You'd just see all of the shortcuts they take when making things you're not supposed to see. Blank spots, objects clipping through each other, gaping holes into the void around the map, all that fun stuff.

That said, I'd love to be able to roam around in Alexander without needing to worry about a party. All of that mechanical detailing that we never get to see due to rushing to the boss.