Doesn't Shiva actually appear in Birds of UST Prey? I haven't seen the relevant issues, or anything she's ever been in, but I would have expected that one to be an easy one.

I don't know who the other people are, but I'm sure they could be made to work.

Oracle/Joker is about the only thing I don't see working (or if it did, it would be really, really dark, possibly too dark).