I'd be game re: Gossip Girl! I had a mini game a while back that was fun but far too brief. I've played Blair, Dan, Eric, and most of the parents (I'm strangely partial to all those abusive, WASPY adults). I don't have a whole lot of modding experience, I co-modded a supernatural game a few years ago on LJ. I'm pretty useless at graphics and IJ knowhow but I'm a professional editor/writer so I could at least help on that end!
Feel free to email me, I'm at Anarkia19{ta}yahoo.co.uk. PMs work too.