Listen, they're fine as is. One leads to you being able to get not only total immunity to fire with the right gear / spells, but actual healing from it. The other is already a MASSIVE gamechanger by giving COMPLETE healing from poison, but making you take damage from 'standard' healing.
Making Zombie cause you to bleed poison would just be bad. For a couple reasons. One of those reasons is fire explosions would be a much, MUCH bigger issue for you, since you'd near constantly be standing in oneh alf of the explosion component. Another reason is that even if it didn't get exploded, the poison would last forever and lead to a much harder to navigate area after battles ended.
