Mary Jane - The Ultimate Black Cat 01

This idea is still burning in my head, and I just remembered something that could help me to expand it even further. This is a preview of what I'm currently working one: Mary Jane, from the Ultimate Comics Universe, becoming the Black Cat. In case some of you are wondering what I am talking about, I'll tell you about some particular issues from the "Ultimate Spider-Man's comics". Let's see:   
 
+ "Ultimate Spider-Man #70 and #71": In these two issues, Spider-Man ended up trapped in a magical mess from Doctor Strange, as he was dealing with Nightmare, Demon Lord of Dreams. Nightmare then trapped Spider-Man in a sleep state and tried to turn him into his vessel by making him suffer a nightmare made of his worst fears. I can assure you, some VERY creepy things came out from that. Worst of all? A vision of Aunt May, wearing Mary Jane's iconic wedding dress, and getting married with... THE GREEN GOBLIN?!!! Anyway, the point is that, in one scene of that nightmare, Mary Jane appears to Peter and tries to kill him because if she doesn't, Peter would kill her. (Coming out of Peter's fear of Mary Jane dying in the crossfire of Spider-Man's battles). But the fact is that, when Mary Jane tried to kill Peter, she appeared dressed as both, the assassin Elektra and... THE BLACK CAT!!! There was only one panel of Mary Jane dressed like the Black Cat, though; which I just can't believe it. I would have payed a lot of money for the comic having more panels of Mary Jane dressed as the Black Cat!  
 
+ "The Clone Saga": The Ultimate version of Spider-Man's Clone Saga brought us some crazy stuff too, especially the nature of the 5 different clones of Spider-Man who were created. One of them was a deformed one, possibly the Ultimate version of Kaine, and it was obssessed with protecting Mary Jane from Spider-Man's enemies. In it's twisted mind, the Clone thought that the perfect solution would be if Mary Jane would have her own powers, so she could defend herself. So the Clone kidnapped MJ in her room, took her to an abandoned lab of Oscorp and injected her with OZ, the same formula that created Spider-Man and the Green Goblin in the Ultimate Universe. The result?, disastrous, as Mary Jane turned into what was identified as the Ultimate version of the DemoGoblin. Luckily, the real Peter asked the Fantastic Four for help and, after some troubles, they apparently managed to cure Mary Jane's condition. However, it would appear the cure wasn't complete, as sometimes after that, MJ's hand started to tremble and her fingernails briefly become claws; but the shaking stopped just as quick as started. Sadly, this plot was never fully explored before the "Ultimate Comics" were cancelled.   
 
Well, the point is, these elements and this unsolved cliffhanger gave me the craziest idea I ever had, and I'm currently working around how it might look like. The first prototypes are looking awesome, but I still have a lot of work ahead, so I ask you to be patient until I have it all ready.   
 
In the meantime, what do you think of this preview and what makes you think?