We are architects, we'll get models from MEP and Structure - neither of whom are really interested in rendering, so don't want to spend time setting appearance to their materials. Generally, we just want to override everything in these models to a single color so they aren't rendering as multicoloured in our views.
The closest I've got where we are able to make a copy of their model (which already makes me uncomfortable) we can set up the phase filters as such to achieve it in our model.
To be able to apply a global override to a link for rendering would be ideal