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[Uri Blass]

I think that the main advantage is better detecting of bugs.

It is possible that the search is simply not symmetric between white and black not because of not symmetric order of moves but because of a bug and you do some pruning for white when you do not do it for black.

It may be possible to see that there is a bug easily if you design symmetric search in the first place when you may miss the fact that you have a bug when your search is not supposed to be symmetric.

I think that being able to detect bugs is more important than speed so I think that if I rewrite movei I certainly will try a design of symmetric search in the first place.

Uri