I would love, both in the GUI and in the python API, to be able to copy a certain selected area of a chunk into a new chunk, similar to
this post. At the moment I have to duplicate the whole chunk, then prune it to a certain area. With tens of thousands of images and hundreds of millions of tiepoints this is quite tedious. If I could select tie points and markers by area (lat/lon) or within a shapefile boundary, then select photos by tiepoints, then copy selected to a new chunk (and/or do the same via manual selection in the GUI) it would make me even happier than I already am :-)