Things I've wanted to see for some time:

1. Eye camera - see from the character's POV
2. Reflection previews - all that time spent setting up a mirrored surface only to find that the angles are wrong is frustrating!
3. Posing window for props that shows them in a zeroed state, where the user doesn't get completely thrown off by their orientation relative to the scene and can use the X-Y-Z dials without having to learn extradimensional physics ;) (esp. good for positioning objects into hands after the figure has been posed)
4. "Drop to floor" script that takes into account shoes conformed to the figure
5. Pose modifier that alters feet dials of a pose based upon conformed shoes