We've released a new feature publicly, that's actually been around for a while. You can now clone all of your display settings from a single display across all displays in your account.
How it works
First, you should create a backup of your displays before proceeding.
We start by making a copy of your display configuration, and stripping out certain details that should only apply to a single room (such as display name, email, key, type, hardware integrations, etc.
What's left is your behavior, styles, and theme settings.
Then, we apply those settings to every other display on your tenant domain.
This is perfect for large deployments, although it may not fit every need.