>>149456176I like to think the Joker and Poison Ivy work best when they are allowed to develop as characters.
Poison Ivy should start out as more seductive before becoming sympathetic while still retaining the seductive angle.
Joker in my opinion should deteriorate over time. Starting out as the zany criminal who would realistically be allowed to live by the courts before slowly becoming more and more murderous as his obsession with Batman causes him to escalate. As he becomes worse more allies should leave him. Insanity is a disease, let us see it get worse over time