The ability to re-arrange the content library would be useful.

With this I mean that iClone should allow the user to:
1. define his own categories (folders) for different kinds of assets
2. specify which folder to move which assets to
3. (if possible) allowing user to annotate the assets and have this annotation displayed in the "tooltip" displayed when hovering above an asset

This would probably require that the installers still install the assets to what-ever directory/category is specified in the installer. That should be fine as long as the user can re-arrange the library afterwards.

Not sure if the ability to rename the assets would be possible, but if so it would require keeping the original name available somewhere.