I’d say that the second of these is probably easier to do in Express, since it relies more on hand-coding in an external file rather than using Actions, and can be integrated with the PHP Feedback Form Action, which works in Pro and Express.
Full-size backgrounds are a tricky issue in Freeway, if you’re doing what I think you are doing. If you would like an image to fill the entire browser window and scale as the window is resized, then currently there is no way to do it in Express. You would have to Upgrade to Pro and use the Supersizer Action http://actionsforge.com/actions/view/234-background-supersizer. Take aloo at the demo and let me know if that’s what you are trying to do.
If you think you are experiencing a bug then the best thing to do would be to send an email to support(at)softpress(dot)com explaining what your issue is with your Freeway document attached so that we can see what is going on.
I’m not sure what you mean by a “multi-Page wizard” so I can’t help you there. As for the rotating 3D object, you will need to turn it into a .gif or video file of some sorts in order to import it into Freeway.