Remove control points over same location

I like to run multiple control point algorithms (when they are working) and sometimes get new control points, sometimes control points that overlap other control points. A point cleanup button would be great to say, these two points have the exact same coordinates for the same pictures, so remove the set. even better is if a good pano can be made with just 3 or 4 points per picture, and you get 20 and most are clustered, say that if multiple points occur within 10 pixels then average all the points together into one point, fine-tune it, then delete the rest. Or somehow calculate 3-9 points which are furthest away from the other and delete the rest. for panos with many many images this can be optimize quickly.