Good Day! And welcome to the community!
I like your idea of a program script to remove unwanted photos. Currently, I complete this task by hand and it typically takes about 90 seconds to remove all the photos. The more times I edit, the easier it gets for me to learn what to keep/remove, although the “mistakes” are sometimes frustrating.
An issue I see is the different missions will all have different “bad” photos, especially if you have a very long transit between your LZ and where your drone left off on a multi-battery survey. Sometimes it might be 20 photos to delete, sometimes 5, sometimes 40!!
If we could get the photo trigger points on a graphic and simply cut out the photos like the bad paths in PC Master, that would be the bomb!