My current five-yard kilt is of 13oz material. It holds a nice, crisp pleat, but also wrinkles easily and unless I meticulously keep the pleats straight when sitting, getting into vehicles, and sliding into booths at restaurants, they crease over badly.

Would upgrading to 16oz material for a potential future 8-yard kilt help this situation by reducing creasing? What other benefits and drawbacks are there to 16oz material vs. 13oz?