Great! And yes it even makes some logical senseB)
Where the current behaviour of POS change in chains has the "I am feeling lucky" factor, actually there is indeed an element of happy accident to the new mode too, although it was thought out for seeking "normality":
Lets say you have two melodic tracks going on different midi channels (to be really conservative we could call them bass and lead:P ). Then you chain them and put them in "Follow head" mode and shift POS ,say, 8 steps and then unchain. Now half of the bassline has moved to the lead track and vice versa. Chaos at your fingertips!