Custom Drops (Redone with random amounts from 1-3, Support for ids with colons (35:2, 35:1, etc.), and they no longer override normal drops, so the zombie will drop his flesh and such, and your things.)
Replace all other mobs (except squids) with Zombies!
/oz mob <number> <type> <-baby (optional)>
Support for wood weapons and chainmail armour!
Giants fight back with their minions and fireballs!
Zombie Jockeys! (Zombies riding spiders)
Multiple Drops by Zombies
Baby Zombie Pigmen
Bosses drop items even after the reloads
You can set Zombie types to not burn in sunlight
There is a one tick delay between Zombie spawn, and the customization (If the server isn't lagging at all and is fairly fast it isn't noticeable.. but sometimes you can see a quick flash of the other mob
Zombie Jockey's follow the Zombie's sunburn setting. This is because of Bukkit's code, not mine. I will try to fix this, but if I do it won't be extremely reliable.
