To me..the concern is this-
If we have pilots winning PBS disputes (buddy of mine just told me he has won disputes 3 months in a row now), there are obviously issues with the software. It happens.
But how are we to know that the branching is working properly?
While no system is foolproof, there should be a way for the pilots who are involved in a branching STT to be able to get a report on how/why the system did what it did.

Always
Motch