What new features would you add in a non-Amnesia Frictional Games Adventure?

[The Rock Worm]

Feature 1 is already in Amnesia TDD. You don't have to hit tab and look at the meter - you can easily tell by the following...

• If the sanity is low Daniel will begin to here voices (of people in pain/agony)
• Paintings will appear differently
• Screen effects will make your vision much less clear than normal
  

That's more of having a sanity meter, Feature 1 was how much your sanity dropped based on the monster/event you saw.