The only hubs I've had which have a distinct 'right way round' are C-Record, which have counterbores for the spoke heads at alternate holes on the outside of the flange. That does force you to build a particular way round, and because the handedness of most rims opposes it you end up with either outbound pulling spokes or a trapped valve. Apart from the rear drive side argument enumerated above, and maybe the brake side of disc brake wheels for the same reason, there is no reason to favour one method over the other. Incidentally, dish has nothing to do with it, except that it's dish that puts the rear dérailleur cage so close to the drive side spokes in the first place.
Aren't those counter bores to relieve stress on the bend of the spoke? -so the spoke head actually goes on the other side of the flange? Sounds like the spoke holes on Mavic hubs http://www.sterba-bike.cz/media/produkty/276/par-mtb-naboju-mavic-276-5.jpg
@absurdbird started
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Aren't those counter bores to relieve stress on the bend of the spoke? -so the spoke head actually goes on the other side of the flange?
Sounds like the spoke holes on Mavic hubs
http://www.sterba-bike.cz/media/produkty/276/par-mtb-naboju-mavic-276-5.jpg