That’s not a big issue, as there is a powerful plugin for that. It is probably worth the price for somebody needing advanced options.
But having a basic 3D pdf export would be very nice, as it’s a simple way to send a 3D file to customers who don’t have CAD apps.
Meshlab (free), ArtCAM Express (125€) allow this export.
Any chance to see this feature in a future update?