Well that makes a lot of sense! Good thinking on your part. I will grab the full version today, hopefully the tweaks go as planned.
Some things I plan to do:
On Purchase Orders Pro, I plan to add a dropdown option for file where we can add a link for files stored on our network storage, this way we don't clutter our media library with all our po documents / invoices/ etc. Media library is already rather messy with the many photos of our products.
Add a field to the product, so there is visibility to the PO creator as to what the standard case / pallet multiples are.
I also am also looking into how the inventory location system is constructed; we use a bin-based system on our shelves, and the current pick-pack system leaves a lot to be desired in terms of tracking across bins.