It wouldn't. It would remove one of those conflicts between the existing provision and this bill. It wouldn't address the other legal and statutory interpretation conflicts that I've identified.
My understanding is that one of the reasons this bill was put forward was specifically because a life sentence was necessary because some of the other offences, not kidnapping, but some of the other offences that are often charged in these situations, don't carry a life sentence, and those maximum sentences were too low.
It seems that an amendment of that nature wouldn't cure all of the ills and would be contrary to the purposes that perhaps started the process of this bill down the road in the first place.