Rendering Workflow for Inter-discipline Trades

Hello everyone. This question may sound quite basic, but would like to know the various workflow everyone is using.

In Revit, as different trades and disciplines are working in a separate revit file, do you all work on it separately for rendering, or you all bind the files then work on it in D5?

For Aerial Rendering, what is the best method? to keep internal elements or to delete and only keep the facades elements?