expose inheritance meta-information though webservices

OpenERP objects are largely exposed by webservices, this is great. However, when some external system try to accomodate to the OpenERP business models, while we can retrieve the basic UML structure by reading the ir.models and ir.models.fields tables, we currently have no way for instance to discover that say the product.product object inherits the product.template object. This makes it hard for instance to discover which default fields we should read for that object without dealing with the views directly.
One of the projects that suffer of this is the OOOR Ruby connector, see for instance that bug:
http://github.com/rvalyi/ooor/issues#issue/33 and its workaround.

So it would be far better if a model could tel us, by webservice (just some kind of fields) if it inherits one or more models.