FrameTransposer doesn't do this, it lets you be right up against the inner box which is what I'm also after.
I wouldn't use the orbital for this, as the orbiting is designed for user input, which needs to bypass damping in order to be properly responsive. What's wrong with manipulating the rotation of the vcam, as you originally suggested? It will rotate around the follow point.
You'll have to show me what you mean. The composer will not always center if you give it a dead zone.