Problem
It would be nice if photo management software could organize all your photos in predictable and understandable way, without obfuscating anything etc.
Also, it would be nice to pile all photos from same place but different sources into one folder and sort them according to time taken, no?
Solution
smart-image-renamer will help you to rename your photos from multiple sources, appending unique sequence number.
smart-image-renamer.py -v -f "{YYYY}{MM}{DD}-{hh}{mm}{ss}-{Seq}" .
Some images are saved as MPO, which contains normal image and thumbnail... To remove thumbnail, we will have to use mungempo, split images and leave correct one. For example:
mungempo -m split 20151007-141359-0530.MPO