Zeromaru X
Arkhosian scholar and coffee lover
But the one thing that a detailed rules set gives is that there's less room for a GM to hide behind his necessary authority. If you've got a rules set that's very handwavey, there's always an argument-from-necessity they can use. That's a lot harder a card to play when the rules for a situation are very clear in what should be applied and how it should be resolved.
This is also my opinion. A rules system that address almost all the needs of the game with transparency for both the GM/DM and the players, leaves less room for shenanigans - for both sides, as rules lawyer players are more easily controlled if the DM has clear rules to work with.