Rethinking Superman in a more realistic way

With Hollywood pumping out remakes and superhero movies faster than a speeding bullet, one would think that it would be time to re-think Superman.
It’s always bothered me that he has these unbelievable powers just because he is in different color sunlight. I’d like to see a more “realistic” version of the last son of Krypton.
In my mind, the Man of Steel would be more man than steel. He wouldn’t be the muscle-bound freak he is in the comics today. (What’s up with that anyway? Does he paint his costume on?) I think he should be built more like a normal person. I don’t think he should be able to fly. I think he should be able to jump real high, like the Hulk does, as he is still bound by the laws of gravity.
I don’t think his x-ray vision and heat vision should be something he can turn on and off at will. I’d do away with the heat vision and make his x-ray vision his normal vision. Instead of being bullet-proof, I’d make him feel bullets much like a normal person would a BB shot from a BB gun.
Here is how I think his back story should unfold. Rather than being placed in a rocket ship alone by his parents and blasted to Earth from the dying Krypton, I would put the whole family in the craft. As they go into suspended animation for the long flight, a meteorite from the home world would damage the craft, causing his parents’ life support units to malfunction, killing them.
Upon crashing on Earth (say, around Roswell, N.M.), he is rescued by a couple from Kansas returning from vacation. Young Kal-El (Superman/Clark Kent) should be a juvenile who speaks a different language and has some educational background. He should be wounded from the crash and very frightened and confused. He should grieve the loss of his parents.
Because he is on a much smaller world and in a different color of sunlight, he has what appears to be superhuman strength. His body is dense and tough, but not impossible to penetrate. Because of his mass, he would be very heavy. I think he would still suffer burns because his hide is dense, not fireproof.
Because of his physiology and the fact that he is on a smaller world and in new light, he can see a larger spectrum of wavelengths, which includes x-ray. Most everything he sees on Earth would have varying degrees of opaqueness to him – most of it see-through.
At first he will need to discover how to communicate, what he can and cannot eat and how to walk in a much lighter gravity (like the astronauts on the moon). I think he should be able to run faster than the average person, but not have blinding speed.
I think this represents what we would more accurately expect from a humanoid visitor from another world. It also makes him more vulnerable to humans and their machines. It means he has to use his mind as much as his muscle to defeat his enemies.
Another twist should be that as he ages, his body adjusts to the lighter gravity. He weakens, his eyesight slowly fades and he gradually becomes more human. His aging process should also be much slower – say, taking 20 years to age five years.
It might also be that, as he matures, other alien qualities develop, kind of like going through puberty. Perhaps he would have the ability to change skin tone and color and camouflage himself much like some lizards and sea creatures do.
Lex Luthor, Superman’s nemesis, should be a secret government agent assigned to investigating the crash of the alien spaceship. He becomes doggedly zealous in his pursuit of the missing alien. So obsessed is he that it causes him to lose his job. But by now he is so determined that he turns to crime to fund is pursuit.
Superman – who sees himself first as Kal-El and goes into hiding when necessary as Clark Kent – plays a cat-and-mouse game with Luthor. He needs to retrieve belongings in his ship from Area 51 and knows Luthor holds the key to locating and entering the secret base.
I think this version of Superman more accurately describes how an alien visitor would appear to have superhuman powers. I think it gives him a vulnerability that is lacking in the modern version. It would make the outcome of his exploits a little less certain.
You know, come to think of it, instead of re-inventing Superman, maybe I should just create a new superhero using this as a guideline. That would be original – something lacking in Hollywood these days.