When we have implemented VST2 in Kdenlive: These are 2 of the most important lv2 effects we miss up to now: https://git.hq.sig7.se/ir.lv2.git This is a reverber based on IR (impulse response) sample to emulate any kind of possible reverb. {width=590 height=296} https://github.com/lucianodato/noise-repellent This is a real-time nondestructive noise removal based on a sample you select from your original track (same as audacity but in real time without render and modify the original audio clip). They both have a specific GUI which may can be done by QML.