I would like to use the data that exists against each project, (i.e. client name, reference number, planned hours) and export it into a templated pdf. This templated pdf would then contain a header and/or footer with the relevant information you would usually associate with an invoice (company address, VAT number, contact detail, payment terms, bank account details etc). We can then use these PDFs for invoicing purposes.
Exporting each report/project as a PDF already exists as a feature, so hopefully using customised templates is a relatively achievable feature WF could develop.