Gonna play a lil devils advocate.
Downfalls to specific traits without combining with others
Heart/Bottom. Usleless if they cannot smell the hog or be smart enough to trail and bay.
Range. Usless if he never knows or cannot distinguish what he is looking for.
Nose. Usless if he cannot apply and utilize what he smells.
Speed. Doesn't matter if they are first to the bay if they quit.
Independent. (My personal favorite) but doesn't work if they are focused on bad habits and wont work with others.
Intelligence. Just about covers all the bases except nose. (Probably the best choice ) but again my second.
Anyway Jmo sitting here brainstorming.
Opinions ?