ALS style maybe kind of. NTTR is just silly to take serious. One LD and you're out.
I think it's better to focus a guild around a theme for the roleplaying. I could really get into a strictly evil-only guild. A drow-centric House with some lore behind it, something like <House Vanadis> for example. Not sure how far I'd take it as far as acceptable races. Probably something like requiring Innoruuk as deity so that'd be limited to Dark Elf, Troll, Ogre, Human, Half Elf. So no Bard, Paladin, Ranger, Druid. I think any deity-specific guild could work well though. Helps if your players all have something in common.
Ruleset is tougher. Whether strict about RP only or a bit softer on that. As well what's acceptable such as grouping/trading with outsiders or not.
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