datasource linked clones

I have noticed that a common pattern with LM is to clone a datasource and tweak it, mainly for the Applies To.  Each time this happens, if an underlying change is found to be needed, this must now be replicated into every clone, offering many chances for semantic divergence over time.  How about adding the idea of a linked clone, so that all clone fields are tied to the original DS until overridden?  The applies to can be overridden by default, as is done now, but then you can benefit from changes to the original DS in the clones except for any specific changes made to them via override.

Thanks,

Mark