I'm just curious, have you ever considered to try out OpenToonz? It's a free open-source animation program that's derivative of Toonz, the animation program that Studio Ghibli used. It's made for all kind of 2D animations, including cut out animations like you make. I'm trying to learn it right now, and while there's still a bit for me to learn I'm having a blast with it. I think you might like it once you understand how it works (be prepared to look trough the "Troubleshoot" section on the communities Google Groups page, as it has a pretty steep learning curve).