Multiple Combined Cross-Sections

[marc.reese]

I would like a "combined cross-section" which creates a boolean intersection of more than one cross section.  For instance, an active cross-section in the X-Y plane + X-Z pane + Y-Z plane = a visible octant of the device. Or two cross-sections which intersect at an angle and can "subtract" out a section of pie like the attached image:

[patrick.c.obrien]

This would be so useful, to understand and view complex assemblies.