My main gripe is that I ALWAYS misalign the shots and in a panorama you end up with unusable portions. If you slightly tilt or misalign then you lose that information from all the shots composing the panorama.
If you could get as much as a preview then you could recompose - panorama shots are usually taken when you have time on your hands.
A useful technique for me is to tilt the camera perpendicular to the motion, i.e. keep in portrait mode for horizontal landscapes and landscape mode for vertical pans.
The root problem is that, at least for Canon point and shoots, the wide conversion lenses are EXTREMELY expensive (70 usd a toy, 140 usd usable, 400 usd semi-pro) and stitching is the only useful alternative. The in-camera stitching assist is a PITA and unusable in low light (or pretty much everywhere).
