Just adding my agreement to those who say that Supes would get no better treatment at Marvel.
DC and Marvel AFAIK are pratically cousin companies. A lot of talent goes back and fort across them. COIE, maybe the most important reboot ever, was made by DC/Marvel guys Perez and Wolfman, and Marvel men Miller and Byrne.
Many crossovers over the years, and even after the relationship got colder due to the 'pornstar' comments, talent still intermingled.
This means it's an illusion thinking that Supes would get this 'alien' pool of talent that would look at him completely differently over there.
It's also an illusion thinking that writers who make great Superman clones and pastiches would write a great Superman. Those clones have a great advantadge over Supes: They are not Superman. They don't have the decades of cultural, political, jingoistic... this diffuse antipathy that the whole industry has for Supes.
A writer who writes a great Blue Marvel, or Hyperion, or even anti-heroes to villains like Gladiator or Sentry... the moment they start writing Superman... poof. Dust. Mediocre Superman. We would get lucky if Marvel simply didn't leech a Batman like character with kryptonite in their pockets on Supes. That's my theory at least.
Finally, Supes is so ridiculous with his system of weaknesses and handicaps to his powers that we wouldn't be able to complain too much. Compared to Marvel characters he's completely obsolete. Any midling energy manipulator would drain him. Any beginner psionics meta would control him.
IMO.
Yes! Great idea. I want that.