Please be a bit more specific. What do you mean, exactly? A mod where the player creates his own guild?
I've also thought about a mod where creating your own 'group' or 'guild' would be possible. Think about it, all you would have to do is make all the dialogs, and create a guild house or something like that. Generic NPC's could make the bulk of the people stationed there (Gaurds, Storekeepers). Don't get me wrong, something of this size would take about 2 months, but it is still possible. Perhaps you should take up Arcanum modding and give it a try?
Yeah I would want something like that too.Well, I know nothing about Arcanum Modding.I think it's very difficult.