I understand that APT will soon be able to handle very large panos.

It would be great if APT also had the facility to enable the authoring of tours within a single pano - such as is offered by Kolor's Paris 26 gigapixel pano and the more recent Budapest 70 billion pixel pano:
http://www.autopano.net/forum/p66784-yesterday-09-00-55#p66784

I see this sort of thing as a first step towards the ability to author completely automated tours within a large pano.

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Andrew Stephens
Nikon D40, Nikkor 10.5mm fisheye, Sigma 8mm f3.5 fisheye, Nikkor 18-55/50/35mm lenses, Nodal Ninja 5 Lite, Nodal Ninja 4 with R-D16, Agno's MrotatorTCS short.
Nikon P5100, CP5000, CP995, FC-E8, WC-E63,WC-E68, TC-E2, Kaidan Kiwi 995, Bophoto pano bracket, Agno's MrotatorA.
Merlin/Orion robotic pano head + Papywizard on Nokia 770/N800/N810 and Windows 8/XP/2K.

noted