Answered: SG14 as it applies to VEXU

Okay so the new SG14

A VEXU robot is 24 inch squared. So the diagonal is already 34 inches. Does that mean VEXU robots can only expand 2 inches before they are breaking the rules?

Can the diameter size restriction for VEXU be expanded to account for there only being 2 robots on the field at a time?

Yep, you are correct. A supplemental update for VEX U was released on June 19th to address this with :