SAP ERP New Indirect/Digital Access Pricing Model's focus on Business Outcomes via nine document types.
While you're reading a lot of opinions on the new SAP indirect access licensing model, You'll want to revisit this SAP news post announcing the new Sales, Audit and Pricing model (April 2018). https://news.sap.com/sap-unveils-first-of-its-kind-new-pricing-model/
SAP provides details on the nine document types which use the Digital Core through Indirect/Digital Access in the pdf below (Bookmark).