I offered to do it (originally as part of the Sixers site, then hosted elsewhere, then on this site), but the Sixers current developers are working on it.
Last word was that Dusan had seen progress and said that it looked good. I know nothing else about it.
Must be a juggling act trying to get the season ticket sales online (June 22nd original target!), and build up the Sixers site on top of this. There are a lot of things to be careful with -- i.e., not allowing multiple votes, maximise marketing opportunities to get bums on seats, make sure that teams are adequately represented, not too many guards or forwards, etc.
Also, you have to give everyone a good chance to vote, so hopefully they can get it running very soon, or at least start publicising the event before people make other plans for that weekend.