Not sure how the Hero team worked with drawing and camera animation, but wouldn’t it be a good idea to have an additional workspace for camera animation? (meaning a 3D view instead of a 2D view)
Right now you would have to do the camera animation in either 2D Animation or 2D Full Canvas by rotating the view which you probably don’t want to do. (aka switch to object mode, rotate the view, do animation, then set the view back, switch to GP mode)
Having a Camera Animation workspace could be useful, that way you could keep your 2D Animation or 2D Full Canvas focused on drawing and switch to the Camera Animation workspace for camera animation and cel style GP object animation.