Actually, you know what's sad? Any artist or writer who goes against the wishes of the original creator and participates in this project. I don't care if it's Darwyn Cooke or Rob Liefeld or Stan Lee himself. It's quite simply disrespectful. Just because they and DC have the legal right to do it doesn't mean it's morally right. And if you think it's morally right, I can't help you. Is that enough "elaboration"?
The Simple Answer:
They are doing it for money.