VAT Entity config for India

Has anyone tried to handle VAT/GST config for India where there is a need to have more than one VAT Entity for a Business Unit?  We have a GL BU for India with operations in multiple locations within India but those locations have very different tax structures, rates and VAT Registration ID's that need to be applied to AP/PO transactions.  The current config only allows a BU to have one VAT Entity assigned to it, but we need multiple VAT Entities.  Short of adding additional GL BU's, has anyone found a way around this?

Thanks,

Kerry Redkey