Posting the same thing twice but...these are practically the same thread so:
Spidey: Married to MJ, has kid. That brings a whole new aspect to him. If you ever run out of baby stories, then time to do toddler stories. He could also be training a protege of some sorts. or if you really want single Peter, you have Good ole Ben R as a partner. Maybe a Spider Team. Spidey, Black Cat, Scarlet, and May Day. And I'd probably merge Black Cat and Shadowcat into one character.
X Men: hmm...actually...how about an underground group of mutants that just respond to disasters. X Men's problem has always been they are too high profile to justify the whole double standard between them and other heroes. I'd reimagine half the cast with different mutant power rules and personalities (de-aging them slightly from 616). X Men is the political comic that goes on with racism, sexism, homophobia parallels. They shouldn't be having giant wars with robots, aliens, etc. They should remain small scale and in the shadows. The team I would have are: Angel, Cyclops, Dazzler, Nightcrawler, Psylocke, Colossus, Marrow with GUEST ROLES for Wolverine (usually a villain), Polaris, Longshot, Pixie etc.
Ultimate.....something: OK, we've gotten to the point where you can't ignore the ridiculous. The Avengers movie made an alien invasion work in a "realistic" way. And 616 is basically guaranteed to try and copy. So instead, lets do the reverse. Let's have a parallel universe travels comic. They don't interact with the main Ultimate line. Reimagine Valhalla into some new theme entirely and have Thor, Ghost Rider, any ridiculous character, travel through the dimensions and fight monsters to save the day. They just don;t bother with Earth because they feel it is too small scale. My idea is to make this one to be the art book. This is where you go all out and have fun with your imagination. This is where you reimagine Ghost Rider as a steam punk character. This is where Thor becomes truly alien. This is where Silver Surfer is some reminiscent of the starry night or something. This is where you get a different style of art each planet.
And Ultimate Daredevil. Yeah...odd choice right? I'm not even a fan of this genre but I feel that Daredevil's stories revolve too little on actual crime drama/comedies. This should be more like Castle or Lie to Me, not Daredevil's emo monologues. Daredevil is just a persona Matt uses when he needs to find evidence the crime bosses wont let him get to. He's Matt FIRST, Daredevil second. I feel modern day crime dramadies is an untapped market that comic writers seem to miss. Anyone who's a lawyer hardly does anything in the court room in comics.