A small improvement on starting positions of Fischer Random Chess or Chess 960

Fischer Random Chess or Chess 960 is a great variation of the game and I think is the future of chess (and I think other variations of the game that include fairy chess pieces have a chance too).

But there is really a problem with castling. The whole point of castling is to improve your position moving your King to safety. But the point of castling is also the surprise factor, you don't want to be too obvious. In normal chess there are positions where you keep your opponent guessing about you castling Kingside or Queenside, it is part of the strategy.

But in Chess 960, some starting positions (as the image below) lack of this surprise factor. Firstly you can't castle to one side without moving one of the Rooks.

So, it would be great to reduce 959 starting positions of Chess 960 to 600 or so (I have not calculated yet the starting positions with this configuration).

What do you think?