Dashing contributor here: That's great, the default style isn't supposed to be a one-size-fits-all solution, and it's definitely not trying to dictate design decisions.
The real meat of the project is the underlying messaging that passes your data from the server to multiple clients.
You write a job that calls send_data, and Dashing takes care of the rest. There's room for as much customization as you like on the front end.