Plugins for each Payment gateway ie PayPal, Stripe etc.
The Seblod community could collaborate and generate Seblod Payment Gateway plugins that take advantage of this.
POSSIBLE PROCESS FOR SITE MAKER/DEVELOPER:
Install the component (very lightweight and nicely commented)
Install any required payment Gateway plugin.
Create Payment content type, add fields, make money :)
Payment Plugins: These could be fields that the user would install and render on content views and list views.
Payment Object: Create a payment object and all relevant fields for #__payment, plus #__cck_store_item_payment, #__cck_store_form_paymentcontenttyype
A lot of you are professional web developers, this means you know your stuff, so what do you think?