For example: If a company name is auto-generated or changes, I would want to be able to have a simple workflow set so that the contacts associated to the company update themselves too (or the other way around where a contact can update other associated contacts and the associated company).
Of course, this would be useful for multiple properties, not just this example.
At the moment, there is only a more fiddly way around this that is more complicated and not very intuitive.