Hi Adam,
To pass Data Layer Events from GTM to GA, you have to add the Universal Analytics Tag to your Tag Manager configuration (not the GA config).
Currently, if you go to your Account/Container in Tag Manager, you should be able to add a new tag and see the Google Analytics options
You'll also have to setup Event Triggers in Tag Manager so it knows to send the Community Events to GA.
Glad to see we're getting some feedback on our Data Layer integration! Also stay tuned since integrating Commerce with the Data Layer is on the board for Phase II.
To recap, our Data Layer integration is designed to push data to Tag Manager not Analytics, which are separate services.