An interesting
proposal for Poison Ivy found over on Twitter:
I have had similar thoughts as well, and in many ways the modern Poison Ivy makes much more sense as a Wonder Woman-connected character than a Batman character. Ivy's power level is simply far too high for Batman, and both Ivy and Wonder Woman should be characters that have a lot to say about feminism and our relation to the natural world.
But I'm not sure it's a good idea.
The first is how DC currently handles Wonder Woman. The character has been removed very far from her feminist roots. I see no way that DC will be ready to handle a Wonder Woman who becomes far more feminist and far more radical in her critique of civilisation. They work extremely well in temporary teamups, postapocalyptic stories, and the like, but I'm not sure they will work well long-term.
The other, and perhaps more important argument, is that Batman simply makes sense as an antagonist for modern Poison Ivy. Batman (and Bruce Wayne) is the champion of the modern city, the industry, glass, concrete, and other elements of modern human civilisation. Poison Ivy is a new Demeter-like character, a champion of nature, both generous and vindictive. They make sense as antagonists for each other.