While working on the next Sunspot shot I decided to use it as a testing ground of utilizing key-frames in SCP (yes, all previous animations I made I haven't used them, frame-by-frame and Liquify tool only). NOT the most intuitive and flexible realization I should say, you basically have to look into the future, draw all necessary frames and only then apply keyframes, loosing the ability to adjust your drawings, which is nuts. But in the end, yeah, it allows you to get much smoother motion.