To add to the sudden influx of Teen Wolf rpers, I'm going to go ahead and offer up my Derek Hale and Peter Hale. They come in a variety of flavors (including AU and pre-canon) and pretty open-ended shipping ability. Het and slash friendly, but I'd prefer not to do any cross-fandom stuff right now.
For Derek, I'd really love to maybe get a group SL going with his pack and extended allies if there's interest. I'm disappointed with the direction things took between him and his baby wolves last episode. :( As far as a one-on-one line goes, I ship Derek/Stiles almost as hard as Derek/anger, but I'd be happy to try anything but Derek/Kate!
I need some Peter/Lydia in my life, too. I have a few vague ideas in mind for them (either young-and-not-actually-existing!Peter/Lydia or newly-risen!Peter/Lydia, depending on your preference) that I'd be happy to share. I'd also like to try an AU with him, where instead of biting Scott he stumbles on (character of your choice here) and seeing where that takes us. Stiles is an obvious choice, but this could be interesting with Jackson or Allison or any of the other characters, really.
Dark lines are my personal favorite, but I can try for some lighter stuff, too.