> For the kml I was wondering what else to put in the description field besides the length and depth.

Possibly option to include ‘map-comment’ for export plan –o “cave.kml”

> The next feature I was considering is the option to add images inside of scraps(with "point image [file name]..."), and not only in the layout with map-image. I need to research some more about inserting images in TEX and Metapost and how to position them.

A similar idea, perhaps, was discussed some years ago.

Refer to the first few returns of this search

http://search.gmane.org/?query=link&group=gmane.comp.gis.therion

My preferred implementation would be to have a ‘link’ property for most point entities as described in here. http://article.gmane.org/gmane.comp.gis.therion/3029/match=link

There could be another property that results in the destination file (if image or plain text) ‘printing’ in the resulting cave pdf output (which is more like what you describe).

Just ideas.

Bruce