Definitely, the power of redux middleware should not be underestimated, e.g. redux-throttle[0], redux-optimistic-ui[1], redux-persist[2]

[0]: https://github.com/mathieudutour/redux-throttle

[1]: https://github.com/mattkrick/redux-optimistic-ui

[2]: https://github.com/rt2zz/redux-persist

(to be pedantic, some of these are not solely middleware)