A post on another website indicates that FIS, as well as changing to 30m radius skis for GS, are also proposing a change in the rules re the starting order.
"Athletes 1 to 10 WCSL are choosing between bibs 1 and 19 (odd numbers)
Athletes 11 to 20 WCSL are drawn between bibs 2 to 20 (even numbers)
Athletes 21 to 30 WCSL are drawn between bibs 21 to 30"