In the "additional info settings" panel on the various checkout pages you can currently add "Text field", "Text Area" and "Checkbox".
So all is there except the "Radio button" and "Dropdown menu".
I make a shop for food takeaway and customers need to choose out of 3 various store locations - right now they have to enter the ZIP, but this leaves options for failure (typos, wrong numbers, they don't know the ZIP, etc.)
Please fill the gap and let's enable radio buttons & dropdowns too!!