Vampires are dead so yeah they should be immune to things that require you to metabolize them to work like poison. OP? it's a single player game lol this isn't an mmo where balance is important. I don't agree with fire because there is a lore that makes vampires afraid of fire. It makes sense. As far as traps it depends on the trap. Saying it'd make them invincible is just plain silly they have more weaknesses than our own human sims. You can choose how they already react to certain things like the sun, garlic, and thirst.
