When you hear that sound after you've aggroed a mob, shouldn't that be tied in to your preception skill?
How close or far away mobs are or can be to you before they aggro you, can't that be tied into your preception skill?
A random dice roll with modifier could be tied into your preception skill when seeing those world trigger events.
Invisability (if you have it) how well it works and how long it lasts, could that be tied into your preception skill?
Your view distance in game? Preception skill?
Where to fish for fishes, tied in?
The Preception skill is talked about a lot, and many of the staff that are introduced in the monthly news letters talk about the preception skill and their excitement about it. So hopefully what I've mentioned above is already in and I'm shooting low because maybe they already know how tied in the preception skill is to everything in the game.