Shared Bevel shaders

I am often working on mesh that has two adjoining shaders that require bevel As it stands now, neither bevel shaders will bevel as neither has the angles. I think we need a shareable bevel so that you can adjust bevel from either shader for not only shape but which shader will the bevel have. In this example the client wants nice chiseled shiny bevel. Unfortunately the model can't support bevels, it was a cad import and point structure won't all it.

The other feature would be a way for shader to compensate for sub-d on camera facing edges. This would solve a very common problem we always face. (no pun intended)

circumference