OMG, please don’t take this as a knock to the YAML ones, but just not having to restart HASS just to test after a single change is a game changer !
Ok it took me a while to get a hold of it (more the whole JSON format and what does what) but having used the Avaya Voicemail Pro system this makes total sense to me !
I still need to dive in and play with Node Red.
Having sad that, Groups and Automations can be reloaded without restarting HA. Go to Configuration > General > Reload Automations or Reload Groups.
I’m finding that you get half way though and realise you need an input boolean, then forgot were you are.
Or just plain get distracted !