Yeah, I am not convinced,I will stay with my guns, zombie should be the undead racial.

It is a fair racial - you gain more sources of healing,but you are vulnerable to more sources of damage. These sources of damage can be mitigated.

I also believe that there should be some sort of ability or character interaction, whose side result would be to turn other non zombie party members into zombies....maybe some sort of hunger mechanic similar to the spirit eater's in NWN2 where you would have to consume flesh from corpses to prevent you from going crazy againts your team mates and eating them.