You're right, tours with loads of multigigapixel images do maybe not really make sense, but tours which have 1 or 2 really high resolution pictures are from my point of view a very realistic scenario.
A tour with a huge overview entry panorama with a lot of details plus a bunch of somewhat lower resolution panos for other places seems to be a quite logical idea to me. The Feldkirch panorama/tour which is linked from the Autopano main page is a good example.
That is why I think that proper support for large images in APT is important.
What's more I would like to see APT develop the ability to create 'tours' within
a giga-pixel image. One way I could envisage this working would be for the user to create/define a series of 'snapshot' views (like snapshots in the Gigapan system) and then be able to sequence these on a time line with synched audio or user invoked narration - a sort of 'snapshot-slideshow' with synched audio but with user controls to override the automation which provided a guidede-tour of a gigapixel image. This could be one way to add that 'story telling' element to the gigapixel image.
Or maybe this is a separate product?
I'm know that the ideas in my original message cant be realized immediately, but I'm sure that APT would profit a lot from these improvments, since it would make things much easier to handle (in particular for non-techies, who dont want to get into a lot of tech details and background)