All I'm saying is that if that's a term that is used to mean the minister who is at the time dealing specifically with these matters, then that's fine. If not, it may need a bit of a different word--the “relevant” minister, or the “most directly affected” minister, or something like that.
That said, I think this has been a genuine attempt to respond to the many points raised. Hopefully we can move forward with this by scheduling some further witnesses. I know the parliamentary secretary has had a chance to raise concerns. If these are concerns shared by the minister, I guess we'd want to hear from the minister as well and move forward from there.