Love sketch.systems!

We built https://www.teampando.com out of a similar love for state-based thinking. We turn natural language requirements into state machines, have a Figma plugin to connect designs to states (didn't realize sketch.systems had embeds that can support that - very cool!), and can export XState state charts.

State-based thinking is already helpful just to get your thoughts organized as you're building something but it's super helpful to give everyone (eng and non-eng) on the team something concrete to talk about and play with.