You are out and about in a hardwood forest in the summer..Temp ranges from 90 in the say to approx 60F at night..You have your trusty edc folder by your side but can bring 1 and only 1 additional edged implement, what is it?
Assuming there are no limitations on what was appropriate to have on my person and that I was not gearing up for the ultimate survival situation (being a mile from home in the woods, v. five miles from the Jeep, eighty miles from home), I would be comfortable with any number of things, depending on what I knew about the area. Whether or not there was deadwood in sufficient quantity that I could gather it somewhat liesurely for a "luxury fire," (to heat water/food I brought in) I would be comfortable with any one of a number of excellent 3 3/8" to 5" fixed blades I have.
Since my EDC folder is a Ritter Grip', I know I can do about anything with it short of chopping trees down,..... and it can handle saplings up to 1 1 /2" esily enough to provide enough of a framework for a shelter if need be.
If not allowed the classic "Nessmuk Trio," which you seem determined to deprive us of

, I would hesitate a bit about not bringing my Wetterlings mini-axe (if that's the right name for it), but not for long. If I were intent on camping more than just enjoying the walking, I might still think about it on my way out but would likely be OK without it. Although surprised at how functional it can be, I am not yet fully convinced that a short machete or Golok is not a better choice (for me) in addition to being lighter.
But, my Ritter Grip' and one of my fixed-blades would keep my mind at ease. Start throwing in a lot of "what-ifs" and I will start teetering on the fence.