If youre looking to keep pack weight down you should ditch the choppers all together. I have spent a good deal of time in northern Ontario during winter (Wabakimi Prov. Park) for several days at a time, and a folding saw was sufficient for keeping a good sized fire going.
However, a big knife/axe can make life easier, I usually dont mind the extra weight when I do pack em.
well, i didn't so much mean lighten, as much as "make simpler." 1 tool to do the job of 2 is nice.
and yes i know about redundancy