And yet, parrying/locking weapons didn't happen in 3e. That's really not the point. The fact is that the wizard gets the same BAB as the fighter, which is ridiculous. However, that is not what we are talking about; we're talking about disarming. .
Parry and weapon locking did happen in 3e it was just assumed to be abstracted by the rules in the same way that disarm is in 4e. And if you had actually played 4e, you would know that the wizard having the same BAB as the fighter does not make him remotely as skilled with swords. It does however mean he can hit with spells about as often as the fighter hits with his sword.
They don't work mechanically. .
They do in fact work mechanically. In previous editions had very simple rules for called shots that 3e chose not to use because they didn't work well within it's strucutre. Just like 4e chose not to use disarm as a base power because it didn't work well within it's game structure.
Actually, it was for any character with sneak attack or sudden strike. Hamstringing should have been in Core 3e, though. I'm not even sure what your point is.
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My point is that in 3e there were certain manuevers that only certain classes could do, and they could only do them if they took a power. In 4e there are certain manuevers such as disarm that only certain classes can do, and only if they take a power.
It's obvious that you have never really played or even spent much time reading the rules of the the game you are complaining about. If you planning to post about it on the message boards, it would probably help a lot if you spent some time actually learning about the game your posting about.