Hammer67
Very well-thought out posts, cogent and persuasive. Because we like knives, and many of us revel in the outdoors the temptation is to overthink and over-carry. Well remember a 'trek' I took across Europe when I was 20 (back in the Dark Ages ...) and the stuff I took with me


I was fit and resilient then but really soon got FED UP with dragging all that gear around in the heat & dust. Most got stashed in bins and ever since I've looked at ways to keep the weight down to improve the appreciation of the day.
Improvisation and delighting in it can help.
On foot, I seriously doubt I'd take a hatchet here but a small one can be strapped to the pack or even the belt, Fiskars does a mini hatchet which is OK for fire prep, but do you need that unless you're totally in the wilderness or on a survivalist death-march?

Unlikely, and anyway a Puukko can make fire curls and baton decent kindling if you use a branch to hit it with. A small folding saw is lightweight and potentially useful too (to saw ice-blocks here

)
My own intrepretation of this Trio would likely omit the hatchet for the reasons stated and focus on KNIVES instead -
they should compliment each other, be to your personal liking but replaceable should loss occur.
Carbon Puukko and in this case I'd take a cheap Marttiini, well good enough but easy to replace, it can skin, prep wood for fires and dress fish, easy to field sharpen too.
Lockback of some kind in stainless for for prep as it slices very well, so a Laguiole gets my vote.
Stockman of your choice, but large is probably best, gives you 3 blades to use and I'd go for a D2 blade or stainless again for avoiding rust in wet situations. CASE, BUCK, Böker, Queen, GEC all offer excellent knives in this pattern and this and the Laguiole can be pocketed, no sheathes needed. With the Puukko, the dangler sheath is far superior if you need to sit down whilst wearing a knife or if laying down or climbing, quick access and weight is kept down, plus it's almost impossible to lose a knife with these tight effective sheathes.
These would be my choices but it's certain that offers will differ and bring their own favourites to the table.