Here's a different point of view for you. Hand picking is a tacit admission that not all your bats of a given grade are as good as one another and by offering the ability to handpick you are accepting that picky retailers (GMs customers, not us, please note), can take the best of all grades and then those that buy in bulk get the rest shipped out to them.
What I think Edward is saying is that all of the 909 Auras, for example, as far GM are concerned, are the same, and therefore no-one handpicking gets this advantage (and lets face it, walking into the warehouse of Kook, bashing a load of bats with mallets, and then choosing what you believe to be the ones that look best and rebound a mallet best is still NOT a scientific or particularly effective way of determining whether a bat is any good, rather it's a way of a retailer being able to sell bats by specifics i.e. number of grains, which is a very small scale model)
And as per Tom's comment, due to the ability to manage stock locally, if there is demand for 10,000 Auras in 200 orders, fulfillment of each of those orders can be managed specifically.
By ensuring that you don't allow one retailer access before another, and defining what is shipped to who, there is much greater level of Equity and the retailers customers know that they would get the same choices whichever retailer they choose to use.
We've had many conversations on here about Pro Direct having shoddy bats from some manufacturers because they don't hand pick, when they could, for example.