Matt, Another advantage to a small set that I can see would be Pleating, I will have to get a Pleat shot of my Kilt for you, I really like the look of Lots of pleats, my pleats are very deep due to the Set size (so i am told) were having a smaller set would allow for more shallower pleats in turn causing more pleats!

I think anyway I am no expert and I think I would sew my finger to my kilt if i tried to make one...