Balloons are by default follow BOM order.
It would be nice if they could follow sequential order, like here:

The order is not tied to the BOM order, but you decide whether the number is clockwise or counterclockwise, and then numbering is sequential, starting from left to right.
A plus would be ability to renumber them and decide from where to start number 1 ballon (number 1 doesn't have to be the upper lft balloon).
Alex