If I project needs multiple animations in the form of image sequences from Natron, Blender, etc., importing these one by one gets tedious. There should be a function to import multiple image sequences at once. I imagine selecting multiple folders in a file dialog and after hitting an import button, each folder gets imported as its own image sequence clip with the clip name being the name of the folder. Post on this topic in the forums: https://forum.kde.org/viewtopic.php?f=265&t=137527
Please try with the current Kdenlive AppImage version 19.08.0a https://files.kde.org/kdenlive/release/ Import complete folder content is now possible.