I like what you did with the system on modules, but what keeps me from using them is lack of standards.
Can you put AM3352-SOM on a SMARC module? It seems that Maybe you can under-price Kontron, etc. while you're at it. An Adlink Sitara-based SMARC goes for 3x what you charge.
http://www.sget.org/standards/smarc.html