interesting that the most balanced one is extremely similar to the default, which is not so:

> \#198 (\texttt{QNBRKBNR})is the most balanced, with both evaluation and asymmetry near zero... Remarkably, the classical starting position-despite centuries of cultural selection-lies far from the most balanced configuration.

That formation is pretty close to the standard position though. Just swaps a Queen and Rook. It puts the Queen in the corner, a less aggressive position with less options to develop. I've only played a little 960, but these queen in the corner positions seem to often lead into more closed positions.