I played DayZ since the first day the original mod was released, and I love the game in every way. One thing still bothers me: melee just does not feel good. When I hit a zombie with an axe, they don't indicate that they're hit nor let you have the feeling your attack is effective. I rather see them 'bounce back' when I hit them, to 'stun' them for a short period, and thus show me that I actually did damage to them. TL;DR: Left 4 Dead 2 uses a same kind of system, where zombies are stunned for one second and scream when hit. Wouldn't that be awesome and very easy to implement?