Thanks for your summary!
Some types of apps (e.g., Python ones) need some additional
manual steps at the moment, which we are collecting in the "Packaging help" section:
viewforum.php?f=11Before you run the AppImageAssistant, you should
check whether the AppDirAssistant has placed any extraneous files (such as /etc/passwd) into the AppDir.
The most important step is to
test the AppImages on the supported distributions.
The last step, btw, should be to
announce your new AppImage in the "Labs" section:
viewforum.php?f=10