Custom connector for sync project

we are trying to connect to a denodo instance (virtual database).

Although there's a way to connect over ADO.NET (via Postgres provider) there seems no way to get that working smoothless (since INFORMATION_SCHEMA is not implemented in denodo). Thus, we search for other ways.

The powershell connector is legit but there's no way to automatically retrieve/update the schema (that's a real bummer to me). So I wonder if there's a (supported) way to extend the list of target systems in the "Create synchronization project..." dialog? (We are playing around with the CData ADO.NET provider as well, but with that we have other problems).