I really like alerts. They are simple and straightforward to set up and turn a complex bit of automation into a really concise, state-driven config. The state-driven part is especially key to me because if I did try and write an alert as a script/automation I would have issues around restarts. Alerts survive restarts without issue and keep letting you know about an issue until you acknowledge it or the issue is resolved.
I would love to see these become UI-configurable. They feel a bit hidden away currently, I don’t see many posts about them so I don’t know how many people leverage this core feature. Making them UI-configurable would make it much more discoverable so more people could find and use it.