Give examples of how the building information for a specific location in the project needs to be filtered for different audiences and purposes?

Different audiences need different information. For example, the future resident doesn't necessarily want to know the exact length of a wall. However, somebody in construction would. Another great example would be how a structural engineer would want to view the structural system sizing, lengths, orientation, etc. While the majority of other people don't care too much about this. The one exception maybe being the architect if the structural member gets to large and becomes an eye sore.

Should your design ideas always be conveyed through photorealistic renders?

Not always, because at the initial stages of design there is very limited information to convey. For example, you may not have any of the furniture in a house. When you showcase an empty room to a client, they may think you're behind schedule or that the project is not complete. Plus, they wouldn't have a good idea of how the space would be filled. Therefore, not fully utilizing the opportunities of the rendering. Rendering it typically reserved for the very end of the project to showcase the final design and all that is has to offer.

How can schedule views be used to assist with procurement and model-based estimating?

Schedule views are helpful when looking at quantities of what needs to be ordered for the project. This is especially nice in the summarized form when grouping/sorting has been done in a thoughtful way. This provides the opportunity to read how many items of one type you need for the project right off the schedule. Another benefit this may have is if you meant to put in three doors, then you see four on the schedule. This probably means you have a duplicate door or one was misplaced. A very nice sanity check.