The BARC sculpt maybe was the best vehicle of '05... I'm happy to get them in the set. A new speederbike is needed though, and JD asked about one in a past Q&A and Hasbro sounded very receptive and interested in the idea, so it might happen.
If they do one, I'd love to see a clear stand with it like the Library Droid had... Something for the hovering effect would be nice.
These figures look friggin' great to me... I'm wondering though, how will they sit on the bike if they use the '03 sculpt? It's not known to move much at the leg without sort of prying outward at the hip. That could spell some warping issues on these. Think along the lines of how the Utapau Trooper warped at the hip because of how he's packaged in a running pose.