No one wants to see an origin story...how wrong you are about that...at least for myself, can't really state anyone else's opinion. I LOVE Superman's origin and the more re-tellings I can get of it the better. Actually I was thinking that we could take the one page splash from the first page in All-Star Superman to re-tell the origin with a voice over from whoever is playing Clark/Superman. That would be enough for me. I guess what is truly needed is an actual story for this idea to truly work?
As for doing a period piece...I wouldn't mind an adaption of the great book Its's Superman...that is different from anything else that has been done on Superman before. Not sure how well it would translate on screen though.