- Generally, quality and usability improvements for JOSM:
- more stability and snapiness in general
- better loading of full-resolution images: they do not immediately load, and need multiple zoom-in/outs
- better 360° support: it’s a bit slow for now, and on zoom in doesn’t display full-resolution quickly, jumping between resolutions and even resets zoom factor before showing full resolution.
- better navigation, see website
- better point feature support (see also website, where this is already better)
- feature marked in picture(s)
- e.g. multiple views of the feature
- e.g. lines on the map from the pictures showing the FOV of the active views
- A 2D map layer with all the SfM 3d points projected in top view, for:
- Mapping building contours without aerial photos
- The former, plus the ground as reprojected from the images
- Mapping areas, mapping street widths
- Mapping painted arrows, lanes etc. on the street’s surface
- Mapping street properties
The SfM items would of course need some improvements of SfM [1] [2]