I agree with E-B.
Now that you mention it Wounding and Tripping/Improved Tripping have some nice synergies. For most parties, typical NPCs/Monsters do not live long enough to gain a net benefit from a Wounding weapon. But if you methodically use Trip to slow the pace of combat down, plus other feats/tactics, e.g. Spring Attack, the equation changes radically.
A themed party using wounding and defensive tactics could have fun with this. Improved Trip, Hold the Line, Spring Attack, Hamstring, Kiai Shout, Ranged Pin, etc. The real problem would be going up against a Big Boss that cannot be tripped, has great reach, and/or excellent ranged attacks. I think the countertactic is that the spellcasters should use walls/fogs to shape & slow the combat.