Oxcart with one square wheel and one round wheel.
If in the stone age, someone would have said that it is a small difference, then we would still be driving around like that now.
Joke apart, I think that progress is always valuable if it is reasonable relative to the cost involved. In this case, it seems best that the calibration software use bit level for their gamma calculation, and that calibration software and patterns are co-ordinated. I don't think it is that difficult if people such as Visca, Alluringreality, Tom and Sotti and others put their heads together and agree on a standard. From what I understand from another post from Sotti, there is an EBU (?) standard but let those people mentioned work it out. It would reassure users here if they would come out with a joint statement that they worked it out and implemented it (if required), and also inform what that standard is.