I’ve recently started heavily using ContainerControls for much of my UI layout. They are a great way to compartmentalize and re-use UI widgets etc.
But I discovered that they cannot be made into a ControlArray… so if I build a UI that has (in my case) 5 identical sections (for setting up channels on a device - the device has 5 channels that can all independently do things), I can’t put these sections into an array, and instead am forced to manually mess with each one individually.
A feature request for this functionality has been out there for 5 years, and it is ranked 49th in popularity. Please sign on if you think this feature would save you some time.