Kdelive doesn’t handle well projects with various frame rates… what kind of issues did you encounter? I recently did a quick 7 video series and the only issue I had was a rotoscoping bug. Do join the chat and discuss your issues the community is very welcoming. 
Every month there is a bit of progress, I wish it could go faster sometimes but it is basically one guy doing the work in his free time.
This is a game changer indeed for floss video editing.