What's the point of a dwarven guild, though? I can maybe understand if you go under the mentality that you "need each other", where the Stonebreakers mine the ores, the Hammerwielders fashion them into weapons, and then they're distributed to the other Hammerwielders for combat...but that isn't the case, is it? It's more like stereotypes are completely ignored, and no matter which clan you are you don't roleplay any sort of difference, "friendly" rivalry, or anything...I'm failing to see anyone go around as a "proud Stonebreaker" or a "proud Hammerwielder"...just a "proud dwarf", which makes the different clans absolutely pointless.
Also, there are two different kinds of elves: Dermorians and Nolthrirs. You don't see them going around calling each other brothers or anything though, do you? They don't have any sort of rivalry because they aren't an egotistical race (proud, filled with pride, etc.), yet the dwarves are, meaning they would constantly have fights over which one is better.