w/r/t the frequency of Disarm in 3.X
A player in the second to last 3.5 game I DM'd ran the classic Spiked Chain Trip/Disarm Monkey (tm). He used disarm a lot at first, but gradually came to rely more and more on tripping. The game ran from 3rd to 6th level.
Disarm is a very solid tactic in 3.X. Few weapon-using monsters in the Monster Manuals are specifically described as having backup weapons. At higher level, anything using a weapon in combat is likely relying on weapon-specific feats (such as weapon focus) and any weapon used is likely to be magic.
An NPC fighter might be armed with a +1 longsword that he's specialized in. He likely has no other magic weapon. In fact, his backup weapon is likely to be a dagger or shortsword rather than a second longsword. Disarming him drops his attacks by 2 (+1 weapon focus, +1 enhancement) and his damage by 3 (+2 specialization +1 enhancement). If he's forced to rely on a dagger, his strength bonus to damage drops as well.
So yeah, I saw a lot of goblins and orcs running around trying to pick up their weapons.
A player in the second to last 3.5 game I DM'd ran the classic Spiked Chain Trip/Disarm Monkey (tm). He used disarm a lot at first, but gradually came to rely more and more on tripping. The game ran from 3rd to 6th level.
Disarm is a very solid tactic in 3.X. Few weapon-using monsters in the Monster Manuals are specifically described as having backup weapons. At higher level, anything using a weapon in combat is likely relying on weapon-specific feats (such as weapon focus) and any weapon used is likely to be magic.
An NPC fighter might be armed with a +1 longsword that he's specialized in. He likely has no other magic weapon. In fact, his backup weapon is likely to be a dagger or shortsword rather than a second longsword. Disarming him drops his attacks by 2 (+1 weapon focus, +1 enhancement) and his damage by 3 (+2 specialization +1 enhancement). If he's forced to rely on a dagger, his strength bonus to damage drops as well.
So yeah, I saw a lot of goblins and orcs running around trying to pick up their weapons.