I’m also thinking of adding a web-controllable power switch to my setup as well, so I could perform a hard power cycle if needed. So far though, that hasn’t proven necessary. But if you find the Pi to be unstable overall you might look into one of these solutions as a ‘belt and suspenders’ kind of approach.
This product is too expensive and doesn’t have an open API but its the kind of thing I am thinking about. https://www.quirky.com/shop/633-pivot-power-genius-power-control-from-your-smartphone
Scott