So it's common knowledge now that Fallout 4 will be announced at E3 2015.
Dynamic Gore
So, let's get right into it. If you blow off someone's arm or leg, the limb / body part shouldn't simply detach from a predefined point. It should dynamically deform based on
- Where it gets hit
- The power of the weapon
- The type of weapon
- The distance of the shot
This should not only apply to limbs but also the torso. If someone gets blown in half, you shouldn't always see the same exposed innards.
Don't tell me this isn't possible, because it is.