xstate & stately ecosystem at a glance
I spend a fair bit of time copying and pasting between viz / reg / studio / VScode trying to remember which one actually runs / imports / outputs code. Having the features in a table would be really helpful (until feature parity)
An upgrade guide that help you upgrade through the different versions without fear would be better than read every changelog looking for those silly breaking changes. Also showing compatibility between the different plugins and maybe even with most covered framework by those could be really useful.
Team collaborative guides
"Guides/strategies specifically for the functional side of the team and how they can work with devs on the statechart through the visual editor (like an example video series of a team doing it, from brainstorming to a published feature)"
Tutorials aimed at learning how to model efficiently in the Stately Studio. https://twitter.com/KrComet/status/1585924373042851840