I'd like to request for Klipfolio to connect to SAP HANA. It's a SQL database developed and used by SAP, but it's not dependant on the SAP ERP system.
There are official JDBC drivers available for HANA, and thus it should be fairly simple for Klipfolio to add. In fact, it seems that most competitors have already added support for HANA:
On a side note: Klipfolio states here that it connects to SAP but I've seen no proof of that. A connector to the ERP system would be fine but very complicated. Therefore the connector to the database underneath is really all we need.