I've been a customer of SystemFlow's for 2 years or so and they are going from strength to strength with each new version. Having built Webflow sites using the Figma+Webflow design system they have created here, I have found both sides of the design process straightforward and feature rich but mostly, this just saves so much time, time that can be spent doing more important tasks. Lastly, Matt is managing, somehow, to keep up with all the new bells and whistles which Figma is launching al the time and this makes a design system for Figma even easier to use (autolayout, styles etc.). If anything, it means that you can get away with knowing LESS about how Figma works and just get on with designing your pages which suits me well as I'm no designer!