I didn't see a dedicated board for this, so I'm hopeful this is a good place to make feature suggestions.
Very common when I'm tweaking a sprite bounding box I'm not making any unique shapes. All I really need is to tweak any edges a pixel in a direction. Instead of clicking a vertex, entering the new X and Y coordinate and repeat, how about this:
Select an edge, and displace with arrow keys by 1 pixel. Hold shift to change the increment to 5 pixels. It may also be relevant to have Control change increment to 0.1 pixels.
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