ah....yes.....I forgot about that issue........
Whether or not they do an origin....they MUST connect the characters with the audience ( and origins are generally a good way to do that ).
While Supes, Lois, Lex, and co are popular and well-known characters, they can't make the mistake of SR and expect everyone to know these characters and their relationships with each other.
We need to know who Clark/Superman is and why he's the type of man he his. What's his relationship with Lois...why does he love. Why does Lex hate Superman so much......etc.
The story doesn't have to be perfectly linear....but we do need to care about the characters on screen. Otherwise, they will come across as flat and 2 dimentional.......a problem many of us had with SR.....