Back in ALPHA, the vehicle headlights illuminated a greater distance forward and the light didn't suddenly vanish at a certain distance and you could actually illuminate the road ahead, instead in BETA you now see a wall of light met by complete darkness one meter further up. As a simulation enthusiast this kind of bothers me, as it isn't just unrealistic but also because it was fine in the past and actually worked very well. Why take a step backwards?
ARMA games have always simulated low light environments very well with the adaptive bit-depth simulation (you can't hack the night away completely with a gamma adjust) and having almost none-existent light fall-off radiuses with vehicle lights, this is a major setback in my opinion.