Hi guys,
Basically, iron sets are treated as one "club", but with 8 different settings (3I, 4I, 5I etc) whereas your driver is one club with only one setting. Because the irons are grouped together as one unit it's prevented us from being able to accommodate this suggestion since it would require a complete re-write of how irons are treated as a group. That's a pretty significant change and would take a while to implement, so I think it'll be a while before you see this feature, if it's even possible.