You've done a nice job with kea. The examples are pretty clear. Somehow the selection of verbs and structure is more readable for me in the vuex example but I'm not sure you could do much about that.

I won't be using this as it definitely sets off my library-depth spidey sense.

The multiple libraries it abstracts would all change versions over time and lead my applications to be even more brittle.

Vuex being mainline with Vuejs is a major plus as I look at its long term stability, though whether it insists on vuejs I need to look into.