Provide ability to use polygon tool from the corner of the bounding box
Most shapes in Illustrator (e.g. the ellipse and rectangle tools) draw from the corner by default or from the centre when holding Option/Alt, but the polygon tool doesn't provide this option.
When using the polygon tool, holding the Option/Alt key should switch to dragging from the corner of the bounding box, which would make it much easier to draw a polygon of a specific height (allowing the user to lean on features like Smart Guides for alignment).
Marc Edwards commented
It’s a small thing, but the benefits would be substantial, when creating certain types of things.