no point in adding more zombie classes.. it will just create more problems.. as in server balance.. besides we already have all the zombie powers necessary for a zclass server...

deformed - strength/hp and height advantage
fast - fast speeds
predators(both of them) - transparent skins... faster then humans.. medium jump height
poisons - extreme jumps
classic - slightly faster then humans... medium hp.. basically a generic human with some small but noticeable powers...
infected - slow .. massive hp.. and sorta blends into the crowd.. (it would make more sense to make this zombie look exactly like a human)

what other powers would a zombie need :| ... knife throwing?!?!? abilities to go through walls for a small period of time?!?!? (now that would be extremely imbalanced) telekinetic knives(longer knifing range???)