A few feature requests for you:
Create a page which lists the names of all devices and the rules or dashboards using each device.
This would be massively helpful for diagnosing unexpected device behaviour and how one rule could impact the running of another rule.
Move the “New Rule” button to the top of the Rule Engine page instead of (or as well as) the bottom of the page
Add a “Manage Connections” link to the main navigation menu
Implement a platform such as Canny to allow users to upvote Feature Requests