File sizes are far too large for exported sheets containing cropped viewports because information outside of the cropped viewports gets exported too. We are always exporting a lot of drawings to other consultants and end up having to create export drawings first, deleting all information that we don't want exported then creating the export file. This is very time consuming and makes hard work of something that should be relatively simple.
Example;
A sheet is set up containing several cropped viewports. Only the information within the cropped viewport should be exported and not everything in the design layers associated with the cropped viewport as currently happens.