The details regarding the world that I know for certain include:
*A ton of playable races. The standard human, elves, dwarves, etc. I also want goblins, orcs, gnolls, kobolds, lizardfolk and a lot of the higher intelligent monster races to be playable.
*The range of lifespan for the races would be smaller. No 1000 year old elves as a lot of settings have. 50-200 year lifespans in general for most races.
*Outside of these "monster" races there will be very, very few traditional monsters. No dragons, no beholders, no gelatinous cubes, etc
*Most adventures and drama in the world be "human" drama. I'm a really big Crusader Kings fan and plan on having multiple complex hierarchical societies in play. Adventurers would be more like agents acting on behalf of nobles scheming against each other. So a good system for social interactions is something I'd really like to have along with the stealth and combat that are typically pretty detailed in most fantasy games.
*This one is more of a maybe. Still on the fence, but... No arcane magic. All magic is divinely gifted. This would eliminate the traditional wizard and sorcerer classes. I am open to altering a traditional warlock class to be available since I always viewed their pacts as more in line with divine granted powers.
Is anyone aware of a system that would work well for this setting? Currently I was thinking about just using Basic Fantasy RPG because I'm familiar with it and it wouldn't be too difficult to make the changes I need. But it is hardly optimal and would basically require creating an entire detailed social interaction system from scratch.