It's nice that I can click and drag a line to define my horizontals and verticals. It would be incredibly faster if LR would use some vision processing to find these lines for me. For example, I click on the edge of a building and LR would look at the region and find the line and apply the Guide. File this under my mantra: "Please make Lightroom SMART. Code it to assist me not just be a interface full of sliders."