My first ever Royal map built during the (short) alpha of the update. The map was built in a couple of hours in the middle of the night, so its not perfectly calculated or anything, but royal maps are meant to be more for fun anyways. I haven't actually tried to play this in Royal mode other than validating, so I cannot say anything about how it will be to play properly, but each section is fun and increasingly challenging to drive on its own, so should be good all together too. ^^
I really enjoy these new colors and everything, really brings a lot more life to the game in general.
EDIT: It seems like Royal maps cant be played in Local mode, so for now just open it in the editor and use the validation tool.