Hi,
Well, to know which package to set, don't you need to open the order to check the products of the order and / or the shipping method selected by the customer ?
Having to go back to the listing to change the type wouldn't instead add an extra step ?
That's what I thought when I developed the plugin and decided to add the edition in the additional information of the order.
Now setting the package type based on the shipping method selected is an interesting idea. I think that's possible. With the HikaShop override capabilities, it should be possible to add an extra option to the shipping methods from a hikashop plugin and then take it into account during the order creation to set the type of the package in the order.
It would require several hours of developments and testing so that's not something I could give you like that though.
If you're interested in us working on that capability to add it to the plugin, please use our contact form and we can give you a quote:
www.hikashop.com/support/contact-us.html