1. User part entry (both to user library, and submit to TI for inclusion in public library).
2. Ability to save design file to user's computer (same format as PC-based SwitcherPro, presuming that there is a design file format).
3. Tile windows option (view multiple tabs simultaneously, in order to see changes in performance when components are changed).
4. Undo/redo option, so two part options can be easily toggled (particularly useful in combination with #3).
That's it for starters.
Regards,
Tony