Integration with E-commerce / Ubercart / Civicrm

What is missing from both E-commerce and/or Ubercart modules, is ability to handle complicated taxes like VAT properly and create Invoices that are directly suitable for bookkeeping in any country.

Maybe Invoices module could have potential to fulfill this empty space. It could be useful, if Invoices module would able to use customer, product, price and order data, directly from E-commerce/Ubercart/Civicrm. So, there might be need for some type of Invoices API, interfaces for E-commerce modules, quick-to-use biller's frontend and finally interface to accounting systems - at least exporting data to csv file.