Good idea
Double down and split- rounded up
Surrender- rounded down
Hit/Stand- rounded towards the origin to increase their frequency of play and make you look more like a sub-basic strategy player
I like that idea! But I'd rather do it with indices *generated* using that method than some other set of indices. Like ZG says, it may not matter much. But it matters a little, doesn't it? I prefer to play as accurately as possible, assuming all sets of indices require the same effort to learn.