Very interesting Tom. You might or might not know that Janine and I are working on a service contract for credit card acceptance. Janine will produce a implementation for Verisign while I will write an Authorize.net implementation. You could make use of them or add a new gateway to these two if you are using a different one.
My personal intention is to bring the ecommerce package up to date and use it for our import and distribution company. Your work sounds like a better way to go about ecommerce than the 3.x version, though. Could I offer any help? As a tester or co-developer maby?
