Fine hotspot area controls

We use area hotspots in place of the dot, often there a buttons that repeat and are the same size, it would be great to be able to put in the dimensions of the area hotspot in pixels, so that they are consistent, and be able to position them using the arrow keys (Even WASD would work), so that it is neater, at the moment we eyeball it, but that is not perfect and it does not look as polished as we would like.