The one thing I'd love to see would be a version with a metal case, like the Zodiac (2) or, even though they're not related to anything, B&O remotes (well, the Beo4, since that's the one I know).
A Zodiac-like anodized aluminium case would be great imo, since it's sturdy (many Zodiacgamer forumites can testify to that) and very good looking IMHO.
And I only brought up the Beo4 because it feels great holding it. They supposedly use zinc to achieve that effect, and it's really nice because it stays cool to the touch for quite a while, even holding it.
Now obviously both of these would make the pandora much heavier, so that's certainly something to keep in mind...