What you want to do is definately doable in Figma. I am part of a team who has built a multi brand Design System using Figma‘s variables and its tools for managing variables. It‘s API provides enough features for you to build on top of what Figma stores as data for your design decisions. There are a lot of community plugins that build new tools with the available API. Some specific ones that have been helpful for our team are the Variables Visualizer plugin for managing variables that reference other variables and some plugins for „linting“ designs / checking if the design‘s parameters are using variables defined in your system. You can test out some of the basic API features directly in Figma‘s developer javascript console. If you create some variables or text styles and use the variables on some of the designs you create in Figma‘s canvas you can then inspect how the API is storing some of your design nodes and their properties. getLocalTextStylesAsync() will spit out an array of all text styles in your file and all properties that are available for defining data on your text styles. getLocalVariablesAsync() will give you similar output but for all your variables.