Since I generally like the idea being thrown around I thought I would write up a quick summary of the idea for discussion.
Special Skill: Perception
Perception checks are called for to detect hidden creatures, notice key bits of detail, or find hidden traps and secret passages. Perception is not a skill itself, but an aspect of several skills. The skill you use to roll a perception check is based on the environment you are in, and what you are looking for.
Arcana: Magical effects and items.
Dungeonering: Underground environments.
Nature: Outdoor environments.
Streetwise: Urban environments
Thievery: Traps, Secret Doors
Example: Bob the Ranger hears some whispers from a tunnel ahead as he moves through an underground passage. He makes a dungeoneering check. He succeeds, which allows Bob to position himself to make the best use of the echoes and allows him to hear the conversation.
Special Skill: Perception
Perception checks are called for to detect hidden creatures, notice key bits of detail, or find hidden traps and secret passages. Perception is not a skill itself, but an aspect of several skills. The skill you use to roll a perception check is based on the environment you are in, and what you are looking for.
Arcana: Magical effects and items.
Dungeonering: Underground environments.
Nature: Outdoor environments.
Streetwise: Urban environments
Thievery: Traps, Secret Doors
Example: Bob the Ranger hears some whispers from a tunnel ahead as he moves through an underground passage. He makes a dungeoneering check. He succeeds, which allows Bob to position himself to make the best use of the echoes and allows him to hear the conversation.