You have raised the issue of a terminal illness, or a critical condition. A critical condition is a different situation, and, having seen the motion, I'm not sure whether or not it helps the bill. Someone can be in critical condition and be in hospital, but their death may not be imminent. All of a sudden the situation becomes a matter of judgment. It's kind of a wait-and-see thing.
Would you also envisage covering a situation in which someone was maybe in a terrible accident and was very disfigured or whatever? Would this be something you would accept a judge determining would not be in the best interests of the child to see? The psychological impact on the child may not be under the purview or under the definition of best interests of the child.