A minor feature request, that I'm sure many people would enjoy: the ability to arrange the cameras in a custom order.
Currently, the cameras are displayed in alphabetic order, so I could reorder them by renaming them (e.g. prefixing with a number), but the ability to rearrange them without that hack would be nice. Perhaps just by dragging their headers in the multi-camera view, or a camera order list in the settings.
I recognize that both concepts would be non-trivial to implement, so I don't expect this any time soon, but something for the feature ideas list.