Adam,
Use the Quick Profile from Surface tool, and select the components of the crossing corridor you want to display in the profile. Yes, we too would like profiles to be like cross sections and show what they slice through in the model, but it is much more complex, because a cross section slice is just a straight line, or a line string, but the slicing plane of a profile would have to be a complex curve with lines arcs and spirals. It is something we are working toward., but was not done for this release.
Denis