World Building: What Do You Look For in a New Universe?

This is just a quick post that is really more for my edification. I'm currently writing LARP background plot for the up-and-coming Invictus. I love to write, so I find myself lost in the little details. However, I'm wondering what people look for in new game universe information. What sort of things get you to play a game? What do you need to successfully build a character? What is unimportant? What do games often leave out, that you wish was included? Consider the following topics, how important are they to you?

1. Cosmology, religion, and ritual practice.
2. A solid rule and skill system, clearly written and available. 
3. Pictures and visuals from the gameworld.
4. A detailed geography and climate with regional information and a map.
5. Suggestions for clothing, make-up, and props.
6. A guide to game-appropriate weapons and armor.
7. Culture write-ups for regions or ethnic groups.
8. A rich political system that PC can immediately join.
9. A guide to NPCs that a character would know or about whom a character would have information.
10. A timeline and current-events log for the game.
11. An active and usable forum system, website, and character database.
12. A bestiary.