I say they should stick with the Animated Series formula for his origins.
They can detail what is going on Krpton, maybe have Brainaic as a presence there as well to set up future movies if they want.
They can then have him land on Earth, show Martha and John raise him, adopt him whatever. Show his developing powers as a teen. He could feel some of that teen angst that he is different, doesn't fit in.. blah blah blah.. the usual.
Show him in college, not exactly the party animal or anything. Explain why he wears the glasses, I mean he doesn't have bad vision. Maybe have some segments with him and Lana and Pete. Maybe, he should join the school's newspaper so he has like a background in journalism?
Then show him appearing in Metropolis. They could set it up similar to Lois and Clark, the new adventures of Superman, where he uses his powers in some situation without the costume (well before the dual identity) like stopping a runaway car or something. Show him at his first day at the Planet. Meeting Lois, Jimmy, Perry.. yadda yadda yadda...
Have him assigned to Lois, who of course tries and ditch him because well she is Lois. Have them get a few stories out, so on so forth.
Then, they can meet Lex Luthor at a press conference or interview. Though, I never did get it. Lois knows Lex beforehand? In the TV show. they dated, in the cartoon, I guess they were somewhat well acquated?
