all of the tools that you mention have merit, i have or had carried all of the above or their equivalents at various times, but i think that the one item that i could make do with ie either a multitool or a ruksack, i have the fireman, with a serrated blade in addition to the ruksack components. i have been pleased with its usefulness. a large chopper would be helpfull, although i can do about everything i need to keep alive with the small knife, i have built and used a workable fireset with just the fireman for instance, i could also do the same with any of the multitools, but i dont think the blades are as good on the multitools as the sak knives. could i build a fire set without anything, i might try that this summer when i get a chance, but a metal tool would speed the work immensly. could i use any of the above tools to accomplish the fire, shelter, food, triad in the wilds, yes i have built the traps, shelters, firesets with the brute, sak, and super leatherman( which i consider equivalent to the wave in this discussion) so far. i havent tried the axe but have a gransfors hunters axe that i will get around to using for basic skills some time.
too many tools, too few hours.
alex