Here's a list of conditions and what their effect would be:
1. Bleeding- causes visible blood on your character, maybe even some dripping from the top of the screen (not real gorey though

2. Blind- causes the screen (minus the interface) to go white except for around your character. Similar to if you had tunnel vision.
3. Burning- causes a fire effect around your character as well as the sides of the screen.
4. Cracked armor- causes your armor...to look cracked

5. Crippled- pretty much stays the same (makes you limp)
6. Dazed- causes the effect that happens when you drink alcohol in the game
7. Deep Wound- (can't really think of a good one for this)
8. Disease- (can't think of one unique for this but it may be similar to poison)
9. Poison- Causes the screen to produce the effect similar to the one that happens when you get hit by those darts (found in jokanur diggings and some dungeons)
10. Weakness- Makes your character look like there weapons and armor are hard to carry
Note: All of these effects could be turned off just like the drunk effect. These screen effects could also go farther and be applied to skills as well
