It sure would please me to be able to place or move targets to the calculated centre of weight of a white-on-black or black-on-white dot. Drawing a circle around the region then have the software add or move a marker to the centre would be a bonus for situations where automatic detection just won’t cut it.
Or even better a snap-type of mode could be enabled whereby if a marker is moved then it snaps to the greyscale centre of mass of the surrounding 4, 9, 16 or whatever amount of cells you specify as a tolerance.