My soul for a Percy Weasley for my Penny (and/or Oliver). He's always been a firm favourite of mine and I'd love to explore some of the relationships he has with people outside of his family.
In the past I've touched on storylines including Future Minister!Percy, Unfaithful!Penny, Penny/Percy/Oliver, their Hogwarts years, etc. and ideally I'd love somebody who might like to work on a series of viginettes that would involve multiple characters and span a number of years!
Failing that I'm always game for another Weasley or even a Ravenclaw or yearmate of theirs to play with! ;)