Not including the two page psionics rules supplement (displays and psionics as diffrent but compatable), my house rules document is 4 pages. It runs off what I know of the revision as a base, and there's a few changes that work to bring things back closer to original 3E (buff spells at 10 min/level, power attack at half damage for light weapon, 1.5x for two-handed).
Still havn't adressed the Palidin Mount summoning, though... I'll need to change that a bit, too.