Purpose-specific triggers and conditions

Labs has this feature. Is it a good feature to use?

Yes, especially if you mostly use the UI Automation and Script editors. The new triggers and conditions can make a single automation more flexible and streamline the logic. Just be aware that there may be some triggers and conditions that aren't full featured yet and it's still possible that there could be significant changes to any given trigger or condition. So you will need to keep an eye on the release notes before updating.