Some of the DCs for magic items are worthless. They need to based more on the wearer/users class level or something rather then a fixed number.
Example: Amulet of proof against detection/Location. 35000gp. DC to beat the item is 19. Lets assume you spend 1/4 of your wealth on buying one = must be ~14th level to afford. Okay, now look at what you bought. Lets assume the 14th level villian is scrying on you: He needs to roll a 5 to get through? Even a 7th level wizard, who can just now cast scry, has 45% chance of getting through.
Another example would be any major artifact with a set DC. The Orb of the Copper dragon can cast suggestion, DC 17 negates. This is an artifact? 3.0/3.5 neutered these things.
