I've seen a number of good comments already. I'm honestly not sure if I can add a whole lot, but nonetheless, here's my spin on things.
In a wilderness blade, I consider tasks I will use it for, and what might work well to handle those tasks. So, let's see here...
Chopping wood - a thick, long blade that employs momentum and energy to give it power. Also requires strength and must be able to withstand torque. A weight-forward design enhances ease of chopping. Comfortable grip and non-interfering guard are a big plus.
Clearing brush - a long blade that can hold and maintain a sharp edge. Also needs to be relatively easy to repair and sharpen.
Draw cutting - bark removal, whether to expose dry wood or harvest building material, the draw cut is common. Therefore, no clip or swedge. Requires a straight back or subtle spear/drop point. Some recurve is nice here.
"Rooting" - tree roots can be a nuisance when they're in the way, and a useful tool as well. Usually, cutting or "harvesting" them requires a bit of digging and prying. Therefore, you need a pretty thick tip that won't easily break when you're rooting around. You also prefer a slightly skinnier blade (that is, measured from edge to spine, no more than 2" or so).
Sharpening stakes - tent stakes, spears, and bed posts are often fashioned with a wilderness blade. Here, a combination of chopping and slicing will handle the task. Again, a slightly forward curved blade is nice, but not requisite, and a good cutting edge is crucial.
Slicing meat - here, a relatively straight, thin edge is ideal. Obviously a compromise must be made between a chopping and slicing design. I'd rather have too much than too little, so I'd simply want a full flat grind on a thicker blade rather than a steep angle. Also easier to sharpen.
So what does that leave me with? Well, I'd say a 8-10" blade, mild spear-point, full V-grind along approx. 1 3/4" blade width, at least 3/16" to 1/4" thick, with perhaps a subtle forward recurve. A comfortable finger guard in front of a well sculpted handle with palm swell would be nice - something grippy but not too coarse (perhaps a rough sanded micarta or maybe ridged/fluted/checked wood grip). A thong hole would be handy, and a solid, hard butt cap would be nice too.
There - that's a start... now what did I leave out?