I think that we should add killstreaks, with increased kills, for example :
You get 3 coins for the first kill, and then for the 5th kill you start getting more coins linearly.
For example, have the 5th kill be 5 coins, the 6th kill, 6 coins. Another thing too, is that every 5th kill, you can get a "care package" for example, the 5th kill you get a frag grenade, the 10th you can get some sort of speed boost, or something to aid the human. It'll make more people want to combat the zombies, rather than run from them
