From what I've read and if I remember right, I'm not sure you'd like "For Tomorrow." The few scans I've seen I didn't like much, although it's Jim Lee art and so pretty! But Kal gets really disassociated from humanity and cold and cruel to everyone. There's a scene where he's talking with Batman on a rooftop and Batman insists that he call him Bruce (which seems really off to me, Batman inisiting Kal call him Bruce out in public??) and Kal says "Bruce is just a mask. All you are is Batman" and flies off. Which is...really cruel! T_T Maybe he makes up for it later? I've never been able to bear to look and find out...

I figured you must have read the Loeb, but better safe than sorry on checking! :)

Oh, have you read Emperor Joker? It's...well, there's no plot I can find, but among the weirdness it has massive amounts of Bruce woobie. Like, lethal levels, lol...