Has anyone checked wheter it is possible to add order programatically without creation of quote?
to create an order, you need some items in your cart? A cart is a quote in Magento world.
Of course, you may want to directly feed the sales_order, sales_order_item tables with a custom feature. But you will lose a lot of feature by doing this?
for instance, most cart abandonment features will not work with this feature
not to mention it is likely your script will need to be fully bespoke and very much not compatible with future upgrade?
Having said this, I am very interested to hear more about your intentions and ideas where this would go as I imagine you may have thought through these pitfalls already. good luck