add tests for the plugin system, and everything else (why not before? This is a PoC, not sure the structure of the project and data will stay the same yet)
What I have in mind that needs to be tested and is not at the moment:
Right now only Bugsnag is supported. Which works for Metrics Watch but not for everyone. Make it easier to add another one by documenting the process lightly.
Hint until then: look at the errortracker directory.
Never done this before, but I think it does break some walls and make it easy for new developers to see what the project is and what's the current state of the app.