One more thought : we need to determine the scope of OFN in relation to the other software that business will use, mainly ERP I think. From my point of view it is a waste of time to try to generate delivery notes or legal invoices from OFN.
I am helping an integrator who is developping, using API, a link between OFN and Dolibarr, a versatile FOSS ERP that I personnally use and like very much. I think it could be great for OFN.
(and yes, we’re waiting for orders in DFC API !)