Chess960, Chess480 etc


Chess480 is the same thing as Chess960 except the castling rules were simplified resulting is half the number of starting positions (half are tactically mirrored.) In Chess960 the King and Rook end up landing in the squares they would land in if you were playing standard chess, even if this means the King doesn't move. In Chess480 the King always moves, regardless of starting position.
That's it in a nutshell. Further explaination if required.
I've just discovered these variations of Chess, not actually played any though.
What are your feelings on these and any other chess variations?