Hi Joe - welcome to the community!
I don't know of a way currently to add a power up to all (or a selected number) or Trello boards at once.
This seems like a great idea though for more 'enterprise-like' control so I hope that you'll see something like this in the future.
If you had to thrive a new habit during a lockdown, what would it be? Trello
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event