I suppose it doesn't help that he's as easily relatable. I always thought characters like Zauriel would have been interesting to read about but the fact that he's never been human and has powers and a back story that noone can relate to make it difficult to read up on. That being said, MM is one of my all time favourite characters and I've picked up previous short series' based on him. And I think they've been outstanding on occasion.
I'm tired of 3d covering up substandard plots... I'm looking at you Avatar and Alice in Wonderland. Just make sure the movie is good, forget the 3d garbage and make a decent film. Or at the very least, do the entire thing in 3D. Do it properly or don't do it at all.
I'd like to see your take on the DC most powerful characters too. This is a pretty comprehensive list you've got here. I wouldn't worry about placing them in order in a hurry. It'll only lead to disputes! Keep up the good work!