Very nice, I have clients who might be interested in this.<p>The first - and biggest - issue that came to mind is integration with warehousing, inventory management, ERP, etc. You have an API which is awesome, but you may want to look into building connectors to some more popular systems - it'll make setting it up much easier/cheaper and help sell it.<p>Another related question is the realtime inventory tracking - how will you handle this in companies who sell both retail and wholesale? Like above, integrations with POS and/or ecommerce systems will be helpful/necessary.<p>For both cases, one system has to be canonical - it may be OrderCircle, but it may not.<p>(Feel free to contact me if you want to chat - I've worked with your potential customers for many years.)