Howndawg
Explorer
One suggestion I heard was Mike Mearl's idea about rogues being able to use Int to find traps. Another possibilty would be to use Int when a character is actively searching for something and to use Wis when the character has a chance to passively notice something. 3.x used this system and FC uses this system. It helps characters like rogues, wizards, and bards who traditionally favour Int over Wis and hurts characters like clerics, druids, and rangers who favour Wis over Int. Fighters and barbarians could care less. There would still be one skill, but different abilities would be used.