This is the stuff I've been using with the little time I spent in Arma 3. Please share yours!
FA Stance Indicator adds a character-like icon to indicate your current stance out of the 9(!) available.
Bigger Compass speaks for itself.
FA GPS moves the GPS receiver to the upper right hand corner instead the middle of your face.
Riffle Collision automatically lowers your rifle against objects (bushes too unfortunately).
Midrange texture replacement makes the midrange texture in the game much nicer, without performance drop.
Blood mist adds blood mist effect when a bullet hitting body.
EDIT: Mostly obsolete, Alpha stage addons.
FA Stance Indicator adds a character-like icon to indicate your current stance out of the 9(!) available.
Bigger Compass speaks for itself.
FA GPS moves the GPS receiver to the upper right hand corner instead the middle of your face.
Riffle Collision automatically lowers your rifle against objects (bushes too unfortunately).
Midrange texture replacement makes the midrange texture in the game much nicer, without performance drop.
Blood mist adds blood mist effect when a bullet hitting body.
EDIT: Mostly obsolete, Alpha stage addons.
The fewer men, the greater share of honor