Some random ideas:
-Law: Increases alignment gains from performing lawful actions (maybe also increases alignment losses from chaotic ones). This isn't necessarily desirable, I guess, but good for lawful ultras if nothing else. Small combat bonuses for lawful characters vs. chaotics might also be appropriate.
-Listening: Chance of revealing invisible opponents or opponents in darkness for a few turns. Maybe reveal their location until they move, and then you have to pass a listening check to see if you can see them again.
-Metallurgy: Some bonuses to smithing (more ingot generation from ores?) would make sense. Maybe has a chance to get stethoscope information vs. constructs (since you can see what they're made of and how they work)?
-Survival: Small reduction in inventory damage, at least to some sources (because you have a better idea of how to stow your gear to keep it dry/protected from heat or cold, etc.)
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.