Melkor said:
I'm trying to put together a D&D 3.5 game for a few friends (who play it exclusively), and I want to go completely 'Old School'.
Same here! I haven't read the responses yet but will after I post this. I think there will be many different views on this.
For me what I'm going to do is this. Less super-heroic/more arch-type for PC characters. Simplify some rules for quicker character creation. A more human-centric feel. Try to follow the original views and feel for alignment and classes. Some examples without going into too much details.
1. Less super-heroic/more arch-type
No prestige classes.
2. quicker character creation
Use UA's option skill rules
3. human-centric feel
Less Disney feel with the races in trying to make them all balanced. I had thought about level limits for demi-humans but decided to make demi-humans +1 EL (except half-elf).
4. Original views
Just read the Gygax threads ;-) e.g. Alignments are black and white, not shades of gray. And they is no backdoor excuses. Lawful is Lawful. Paladins are LG, not NG, not CN. Paladins are knights of lawful nations who do good deeds, and are not holy warriors.
I also will put more emphasis on mystery of things and less PC. e.g.
- Magic: No one knows exactly what it is? Sages have theories. But no one really knows. Magic is the name given to an unknown power by men.
- Mermaids and Lizard-men. Not Folk.
- Less Humanist. It's fantasy, so why not have some fun!

Half-orcs don't need to have a human/orc family tree. They could be an orc hybrid created by wizards, like the warforge. Maybe all half-orcs are male. Maybe they're sterile, maybe they're not.