I think all mountains and hills should be about 50% taller. This would make the world seem bigger and more alien. Sort of like it is here: https://www.reddit.com/r/skyrim/comments/3tu34c/homecoming_by_krystian_biskup_xpost/
Maybe we could have a brief bit of gameplay or cutscene where you see yourself and the other prisoners getting ambushed and captured by the empire, before the opening scene