There is a request for a mapper for XML Schema - relational database tables logged on our issue tracking system but it was not implemented yet. We will consider it for a future version.
I too would like this. However, I think this is what XSLT has been invented for ? Why not just write some XSLT programs and distribute those with the next update ?
Though, an XSLT might not be so flexible, since it may require some more options being put in by the user.