More label and packing list sort options

Currently, I can sort the way labels and packing list print; by SKU, by Warehouse location, etc. I would like to have multiple options. For example, print labels and packing slips by order number (oldest first) and then print by Warehouse location, then by sku. I have labels and packing slips set to print by warehouse location which is a must for our operation but it would help to have packing lists and labels print by order number as well, especially when batch printing.