I second the interest in animating bounding boxes... or the implementation of vector shape animation (which would basically be the same thing). For these purposes, Bounding Boxes should probably be their own type of item within the hierarchy, and/or be able to be attached directly to bones rather than Attachments.
At some point I would like to work on a system for our games that would be very similar to a fighting game collision system, where various hitboxes are animated or turned on/off on specific frames. For this kind of system, you would also want to be able to color code the hitboxes — some for the character body, some for the "active" (attack) hitbox, etc.
It would also be very nice to be able to:
• Draw rectangles using a tool
• See the exact X,Y coordinates of any point of the bounding box, and set them manually
• When drawing or repositioning, ability to hold shift to draw or move the point in a straight line (or 45° angle)
• Keyframe the positions of individual points on the bounding box (its scale, rotation, and overall position could be controlled by a parent bone)
