Now that P2vr5 will handle video and flat images, it would turn into a very interesting tool for making web documentaries, not just virtual tours. Softwares like interlude, racontr, or popcorn maker are early examples of this. In fact, the demand of having a GUI to handle html5 exceeds these uses.
I'm waiting the next beta of v5 to play with flat images and see waht can be done!
Best
Pablo