[DF] Why isn't Detects as Evil more of a disadvantage?

[Kelly Pedersen]

Generally speaking, "being something that can be Detected" isn't worth points, because it's not actually obvious to someone without a special ability. To Detect Evil, someone has to purchase the Detect advantage, or put points into a Detect Evil spell - it's not obvious to someone without those traits. You can see this in other traits as well: you don't buy an "affected by True Faith" disadvantage, it's simply a 0-point feature, because the person with True Faith has to pay for it.