I think there is a law of diminishing returns on emergency equipment. Good reliable cutting tools and firemaking equipment could be accomplished with a Morakniv 2011 with less expenditure of weight and bulk. There is a point when it comes to survival kits that i expect at least a brewkit if not a few meals. In vehicle, vessel and aircraftkits that might be a goodstart bit an entire kit in that weight class will be bulky and reduce the likelihood of successful egress in an emergency.
This is simply my opinion, since you asked