Bounding Boxes for X, Y & Scale
I read two other ideas similar, but I think it comes down to bounding boxes, ala Photoshop, with Cmd and Option changing the box points' functions (skew, etc) as in PS. Instead of clicking a layer as in PS, you click the element in the timeline, and its box appears. Including cameras.
Much more intuitive and fun to use. For CH, I think it would be more intuitive than in PS where you might have 100 layers.
Related to this, if cameras can't get a bounding box, allowing the mouse/touch controls to affect X & Y coordinates to establish keyframed shots instead of the dials would be nice for those of us not doing live performance.
Thanks.

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James Acquavella commented
As for the camera related ask, you can create triggerable shots using the Camera Transform behavior. Try arming the Camera Transform's Mouse & Touch Input parameter, then invoke the "Create Triggerable Shot" button. I also prefer the live mouse and touch input for manipulating the camera transformation.