Yeah, but I do have admit their relationship has gotten sort of stale over the years, partially because they can never get her into a role that compliments Spidey. And fuck the 'aging' thing, by this time it should have been his KID wearing the suit and Pete and MJ retired in Florida with the Lizard! LOL But I think Spider-Man's character does need to grow up or at least to a point. I guess my mind keeps going back to the old Maximum Carnage storyline, and Pete was fighting the good fight, rallying troops and showing some pretty advanced tactical thinking, befitting his years of experience. I mean are they ever going to address the fact that he should be at least in his 30s by now and doing this for like 15 years? He's been active (if you go by origin years) longer than Iron Man and the Avengers. Even in the Ultimate U, he's been active longer than the Ultimates have been around.
Now Ultimate MJ I like far better than 616 MJ to be honest, I think maybe in time she could sort of develop into his Oracle like Babs Gordon is to Batman. She's an intelligent and while not genius level like Pete, she can hold her own. I could really see her as acting like Spider-Man's partner (even if she's not wearing a costume) behind the scenes on the other end of a radio.
Now in 616 the closest Spidey has ever had to that was the Black Cat. Granted she wasn't the 'good girl' but so what! Plus she's hotter than all getout, imagine if they were to marry off Spidey and Black Cat (or at least shack up) make a big to do out of it all, you'd see her cleavage everywhere! Plus, she's a rather interesting character in that she's on the 'good' side, but can still drift when it suits her. Fun tension, plus the married life parts of the story wouldn't be so dull. I can only remember a handful of times when her part of the story had her doing anything that put her on equal footing with Spider-Man and not ending with her needing to be saved or looking out a window worrying or arguing with Pete.
Spider-Man needs more than a hot fuck buddy he needs a parter in every sense of the word. In the field, at home, just period. Even if he's a fugitive, he's got another fugitive right there beside him. He may not be 'happy' but he's content.