Blade length: 3.5 inches or something in that area.
Overall length: The blade length+a handle long enough to apply most hand sizes.
Choil: Can become handy for some people, but I find knives with choiles easier to resharpen because the handle doesn't stay in the way.
Blade thickness: 4mm
Grind: Full flat grind or convex grind
Steel: AUS-8(a lot of steelsnobs will slam me for that suggestion, but I'm speaking from experience), 1095, N690 or a steel that is easy to resharpen without expensive equipment.
Handle material: Micarta or G-10. Rounded corners.
Other: The blade should have a slight, downward angle(if you place a ruler on the top of the knife handle, the blade itself should have a slight angle, like the SOG Bowie 2.0 or the ESEE-4) Makes it easier to do heavier cutting because of physics.
Lanyard hole and a slim profile sheath.
Just my opinions
