In addition to the "include only items linked to individuals" in the export:
1) Why are you exporting to Gedcom? You can export FTM to another FTM file?
2) You said "It would also be nice if you had the ability to delete more than one person, place, or thing at a time. I have had to do a lot of one by one deleting of people, sources, locations, and media that do not apply to the tree they are in."
To delete more than one person at a time, you have to go to Publish Charts. (I know - not very intuitive). You can delete all the people in most charts by right-clicking in the blank area of the chart. You can remove people from chart by right-clicking on a person - 1) "Select this person and 2) "remove selected persons from the chart". You can delete whole families or lines or brnaches with this technique. This procedure will leave associated places and sources in the file.