The purpose is simply to give back and hopefully have wider user than ourselves to build a better tool besides our explicit use-case.
Since we're using AngularJS+D3+Symfony specifically, I figured others could at least learn the same way I did by seeing a real application using these technologies rather than the usual example apps.
The target audience consists of users like me, which need a simple live dashboard to see high-level metrics and tell (1) if anything may be wrong and (2) if performance is improved for a custom application using MySQL, Postgres or MongoDB.
It's not meant to be a BI solution like QlikView (which the company uses internally and is awful), but something light, embeddable, and doesn't require `for..each`ing custom SQL queries and mapping it to D3 just to make sure the last deployment didn't break anything.
I'm very surprised that users wanted something in PHP or as installable as Wordpress. The installable part is pretty simple, and most configuration is done on the client-side. I just wasn't sure if a Node backend would be more accessible to this audience.