Bit late, but I have a couple ideas, both are a bit out there though

* pull in Vertigo, and go either Shade, The Changing Man or an OC created by Dream (Morpheus or Daniel)

* A hero who switches between two forms, one male and one female, each with their own power sets

* or I had an OC from another role play that i could revamp if I can find it. A Psionic similar to the pointman, enhanced reflexes and all that

What do y'all think?