Pokemon weak to Poison would be badly poisoned instead of normally poisoned, and Pokemon resisting Poison would be immune to being normally poisoned, and be normally poisoned instead of badly poisoned. Pokemon that are 4x resistant to Poison like Golurk, Rhyperior, Golem, Onix, and Pupitar would be immune to being badly poisoned as well.
Should be impossible to burn fire types. Impossible to paralyze electric types.
I'm with you on the first one, but there's no reason why electric types shouldn't be able to be paralyzed by moves like Stun Spore or Body Slam. And putting in the restriction for electric moves only would be kind of odd. --- If you actively hate Justin Bieber... then you don't know what "intended audience" means. Hate Twilight instead, it's far worse.